PHYSICS- PAGE 11
1. X-rays are filtered out of human body by using
(A) Cadmium absorbers (B) Carbon absorbers (C) Copper absorbers (D) Aluminium absorbers
Ans: D
2. The light from a laser source is monochromatic because all the photons have ...............
(A) Same energy (B) Same phase. (C) Same amplitude (D) Are in same direction.
Ans: A
3. A technique to analyze frequency spectrum of the signal in speech recognition is:
(A) Raman (B) UV (C) X-ray based technique (D) Fast Fourier transform
Ans: D
4. Indication of Blue colour shows the Presence of ............... particles in the GSR?
(A) Lead (B) Nitrate (C) Nitrite (D) Antimony
Ans: B
5. LPC stands for:
(A) Light particle component (B) Least Programming component
(C) Line prediction composites (D) Linear predictive coding
Ans: D
6. Energy passing through unit area is
(A) Intensity of x-ray (B) Frequency of x-ray (C) Wavelength of x-ray (D) Amplitude of x-ray
Ans: A
7. If fast moving electrons rapidly decelerate, then rays produced are
(A) alpha rays (B) beta rays (C) gamma rays (D) x-rays
Ans: D
8. The inert gas used in electrode less discharge lamp in AAS technique is:
(A) Ne (B) Ar (C) He (D) Xe
Ans: B
9. The spectroscopic technique which involves illumination of a sample of interest with primary X-rays accompanied by release of secondary X-rays characteristic to the sample is known as
(A) X-ray emission spectroscopy (B) X-ray fluorescence spectroscopy
(C) X-ray diffraction (D) X-ray absorption spectroscopy
Ans: B
10:-The power consumed by an ac series circuit is maximum when its power factor is
A:-0
B:-1
C:-0.5
D:-0.8
Ans: B
11:-The protective measure to avoid electric shock while touching electrical appliances is
A:-Switch B:-Fuse C:-Lightning arrester D:-Earthing
Ans: D
12:-What is the unit of apparent power?
A:-Watt-hour B:-Watt-sec C:-VA D:-Watts
Ans: C
13:-In an R-C series circuit, the voltage across each element is 50V. The applied voltage is ----
A:-100V
B:-70.71 V
C:-57.23V
D:-50V
Ans: B
14:-What is the effective resistance of a parallel combination of 20, 30 and 60
A:-l Q
B:-ll Q
C:-2 Q
D:-3 0
Ans: A
15:-Choose the correct statement
A:-The CFL bulb is an incandescent one.
B:-LED bulbs are more efficient than CFL bulbs in terms of power and life.
C:-LED bulbs are cheaper than CFL bulbs
D:-CFL bulbs remain cool, when operated
Ans: B
16:-Which of the following is not a constituent of an electro mechanical relay?
A:-Spring B:-Pivot C:-Armature D:-Transformer
Ans: D
17:-The 8051 micro controller has a data memory of
A:-128 byte RAM
B:-128 byte ROM
C:-128 kilobyte RAM
D:-128 kilobyte ROM
Ans: A
18:-The modulation used in GSM is
A:-Gaussian Minimum Shift Keying (GMSK)
B:-Amp|itude Shift Keying (ASK)
C:-Binary Phase Shift Keying (BPSK)
D:-Quaternary Phase Shift Keying (QPSK)
Ans: A
19. An example of stable equilibrium is
(A) A book placed flat any where on a table (B) An egg standing on one edge
(C) A pendulum in a rest position (D) A loaded spring in motion
Ans: C
20. The freely falling body deviate from its true vertical path due to coriolis force. The deviation is always towards
(A) North (B) South (C) East (D) West
Ans: C
21. The electric potential inside an enclosure completely surrounded by conducting material, when there are no charges left over inside (A) varies from point to point inside (B) remains zero at every point inside
(C) remains constant at every point inside (D) fluctuates continuously
Ans: D
22. Which of the following is not an example for second order phase transition?
(A) Transition of liquid helium I to liquid helium II at lambda point (2.19K)
(B) Transition of a superconductor into an ordinary conductor
(C) Transition of ice into water at temperature 0 degree C and pressure 1atm
(D) Transition of a ferromagnetic material to a paramagnetic material at Curie temperature
Ans: C
23. When four indistinguishable particles are distributed in two identical compartments, the total number of microstates is
(A) 4 (B) 6 (C) 8 (D) 16
Ans: D
24. The number of microstates corresponding to any given macrostate is called
(A) Experimental probability (B) Thermodynamic probability (C) A priori probability (D) Conditional probability
Ans: B
25. In a canonical ensemble, a system S of constant volume is in contact with a huge reservoir R. Then,
(A) S can exchange only particles with R
(B) S can exchange only energy with R
(C) S can exchange both particles and energy with R
(D) S can exchange neither particles nor energy with R
Ans: B
26. In which of the following processes Clausius- Clapeyron equation is not applicable?
(A) Melting point of solids (B) Isobaric process (C) Boiling point of liquids (D) Regelation of ice
Ans: B
27. For good conductors skin depth varies inversely with ______ power of frequency
(A) Half (B) One (C) Two (D) Three
Ans: A
28. The wave nature of material particles was experimentally established by
(A) Millikan’s oil drop experiment (B) Davisson and Germer experiment
(C) J. J. Thomson discharge tube experiment (D) Photoelectric effect
Ans: C
29. Which of the following in quantum mechanics are formally identical to Newton’s equations of motion in classical mechanics?
(A) Equation of Born’s approximation (B) Equations of Ehrenfest’s theorem
(C) Schrödinger’s equations (D) Equation of Fermi golden rule
Ans: B
30. The degeneracy of energy eigen value of a free particle is
(A) one (B) two (C) three (D) four
Ans: B
31. The internal energy of a real gas is
(A) The KE of molecules (B) The sum of KE and PE of molecules due to their mutual forces of attraction
(C) The PE of molecules (D) Equal to that of an equal amount of ideal gas
Ans: B
32. The increase in the internal energy of a thermodynamic system undergoing a change of state is equal to
(A) The heat transferred into the system (B) The sum of heat transferred into the system and work done by the system
(C) The difference of heat transferred into the system and work done by the system (D) The work done by the system
Ans: C
33. Which of the following statements is (are) correct?
I. Heat energy is a path function
II. Work done is a path function
III. Internal energy is a path function
(A) I only
(B) II only
(C) I and II
(D) I, II and III
Ans: C
34. The net change in the internal energy of the universe is always
(A) Zero (B) Infinite (C) Positive (D) Negative
Ans: A
35. The statement that “heat cannot flow of itself from a colder body to a hotter body” is made by
(A) Clausius (B) Lord Kelvin (C) Max Planck (D) Kelvin-Planck
Ans: C
36. According to the third law of thermodynamics, at absolute zero temperature, the molecules of the system are in perfect order and its entropy
(A) Is always positive (B) Is always negative (C) Is always zero (D) Tends to zero
Ans: D
37. Two ends of a rod are kept at 1270 C and 2270 C. The change in entropy is 20 cal/ K. Then the amount of heat flown in the rod is
(A) 200 cal (B) 400 cal (C) 2000 cal (D) 4000 cal
Ans: C
38. When applied to solar radiation, Planck’s law reduces to Wien’s law in the
(A) Ultra violet region (B) Microwave region (C) Infra red region (D) Visible region
Ans: A
39. The phase space consists of ‘n’ position and ‘n’ momentum co-ordinates. Then the total number of freedom of the group is
(A) nf (B) 2nf (C) nf/2 (D) f
Ans: B
40. If four distinguishable particles are to be arranged in two phase cells. Then the possible number of macro and micro states are respectively
(A) 4,16 (B) 5, 16 (C) 4, 18 (D) 5, 18
Ans: B
41. The probability of occupation of an electron in Fermi level is ‘1/2’ if
(A) T= 0 K (B) T > 0 K (C) T < 0 K (D) T=1
Ans: B
42. Moving coil ammeter is ________ instrument.
(A) an indicating (B) a controlling
(C) a recording (D) a digital
Ans: A
43. Fiber optic cable carry signals in the form of ________ energy.
(A) light (B) electric
(C) magnetic (D) heat
Ans: A
44. Hot wire anemometer is an instrument used to measure ________.
(A) impedance (B) flow
(C) RBC count (D) e.m.f.
Ans: B
45. ________ is the unit of resistivity.
(A) Ohm.metre square (B) Ohm/metre
(C) Ohm/metre square (D) Ohm.metre
Ans: D
46. In vibration measurement, ________ is used as a transducer to sense displacement, velocity and accelaration.
(A) accelerometer (B) pressure guage
(C) manometer (D) tachometer
Ans: A
47. If a strip of conducting material carries current in presence of tranverse magnetic field, an e.m.f. will be produced between the two edges of the material and this property is called ________.
(A) seebeck effect (B) piezo electric effect
(C) hall effect (D) induction effect
Ans: C
48. ________ is defined as the mass of water vapour present per unit volume.
(A) Relative humidity (B) Relative viscosity
(C) Apparent viscosity (D) Absolute humidity
Ans: D
49. To minimize ________ error, accurate analog meters are provided with mirrored scales.
(A) random (B) parallax
(C) gross (D) instrumental
Ans: B
50. The resolution of D/A converter is approximately .2% of its full scale range. It is
(A) 8-bit converter (B) 4-bit converter (C) 9-bit converter (D) 12-bit converter
Ans: C
(A) Cadmium absorbers (B) Carbon absorbers (C) Copper absorbers (D) Aluminium absorbers
Ans: D
2. The light from a laser source is monochromatic because all the photons have ...............
(A) Same energy (B) Same phase. (C) Same amplitude (D) Are in same direction.
Ans: A
3. A technique to analyze frequency spectrum of the signal in speech recognition is:
(A) Raman (B) UV (C) X-ray based technique (D) Fast Fourier transform
Ans: D
4. Indication of Blue colour shows the Presence of ............... particles in the GSR?
(A) Lead (B) Nitrate (C) Nitrite (D) Antimony
Ans: B
5. LPC stands for:
(A) Light particle component (B) Least Programming component
(C) Line prediction composites (D) Linear predictive coding
Ans: D
6. Energy passing through unit area is
(A) Intensity of x-ray (B) Frequency of x-ray (C) Wavelength of x-ray (D) Amplitude of x-ray
Ans: A
7. If fast moving electrons rapidly decelerate, then rays produced are
(A) alpha rays (B) beta rays (C) gamma rays (D) x-rays
Ans: D
8. The inert gas used in electrode less discharge lamp in AAS technique is:
(A) Ne (B) Ar (C) He (D) Xe
Ans: B
9. The spectroscopic technique which involves illumination of a sample of interest with primary X-rays accompanied by release of secondary X-rays characteristic to the sample is known as
(A) X-ray emission spectroscopy (B) X-ray fluorescence spectroscopy
(C) X-ray diffraction (D) X-ray absorption spectroscopy
Ans: B
10:-The power consumed by an ac series circuit is maximum when its power factor is
A:-0
B:-1
C:-0.5
D:-0.8
Ans: B
11:-The protective measure to avoid electric shock while touching electrical appliances is
A:-Switch B:-Fuse C:-Lightning arrester D:-Earthing
Ans: D
12:-What is the unit of apparent power?
A:-Watt-hour B:-Watt-sec C:-VA D:-Watts
Ans: C
13:-In an R-C series circuit, the voltage across each element is 50V. The applied voltage is ----
A:-100V
B:-70.71 V
C:-57.23V
D:-50V
Ans: B
14:-What is the effective resistance of a parallel combination of 20, 30 and 60
A:-l Q
B:-ll Q
C:-2 Q
D:-3 0
Ans: A
15:-Choose the correct statement
A:-The CFL bulb is an incandescent one.
B:-LED bulbs are more efficient than CFL bulbs in terms of power and life.
C:-LED bulbs are cheaper than CFL bulbs
D:-CFL bulbs remain cool, when operated
Ans: B
16:-Which of the following is not a constituent of an electro mechanical relay?
A:-Spring B:-Pivot C:-Armature D:-Transformer
Ans: D
17:-The 8051 micro controller has a data memory of
A:-128 byte RAM
B:-128 byte ROM
C:-128 kilobyte RAM
D:-128 kilobyte ROM
Ans: A
18:-The modulation used in GSM is
A:-Gaussian Minimum Shift Keying (GMSK)
B:-Amp|itude Shift Keying (ASK)
C:-Binary Phase Shift Keying (BPSK)
D:-Quaternary Phase Shift Keying (QPSK)
Ans: A
19. An example of stable equilibrium is
(A) A book placed flat any where on a table (B) An egg standing on one edge
(C) A pendulum in a rest position (D) A loaded spring in motion
Ans: C
20. The freely falling body deviate from its true vertical path due to coriolis force. The deviation is always towards
(A) North (B) South (C) East (D) West
Ans: C
21. The electric potential inside an enclosure completely surrounded by conducting material, when there are no charges left over inside (A) varies from point to point inside (B) remains zero at every point inside
(C) remains constant at every point inside (D) fluctuates continuously
Ans: D
22. Which of the following is not an example for second order phase transition?
(A) Transition of liquid helium I to liquid helium II at lambda point (2.19K)
(B) Transition of a superconductor into an ordinary conductor
(C) Transition of ice into water at temperature 0 degree C and pressure 1atm
(D) Transition of a ferromagnetic material to a paramagnetic material at Curie temperature
Ans: C
23. When four indistinguishable particles are distributed in two identical compartments, the total number of microstates is
(A) 4 (B) 6 (C) 8 (D) 16
Ans: D
24. The number of microstates corresponding to any given macrostate is called
(A) Experimental probability (B) Thermodynamic probability (C) A priori probability (D) Conditional probability
Ans: B
25. In a canonical ensemble, a system S of constant volume is in contact with a huge reservoir R. Then,
(A) S can exchange only particles with R
(B) S can exchange only energy with R
(C) S can exchange both particles and energy with R
(D) S can exchange neither particles nor energy with R
Ans: B
26. In which of the following processes Clausius- Clapeyron equation is not applicable?
(A) Melting point of solids (B) Isobaric process (C) Boiling point of liquids (D) Regelation of ice
Ans: B
27. For good conductors skin depth varies inversely with ______ power of frequency
(A) Half (B) One (C) Two (D) Three
Ans: A
28. The wave nature of material particles was experimentally established by
(A) Millikan’s oil drop experiment (B) Davisson and Germer experiment
(C) J. J. Thomson discharge tube experiment (D) Photoelectric effect
Ans: C
29. Which of the following in quantum mechanics are formally identical to Newton’s equations of motion in classical mechanics?
(A) Equation of Born’s approximation (B) Equations of Ehrenfest’s theorem
(C) Schrödinger’s equations (D) Equation of Fermi golden rule
Ans: B
30. The degeneracy of energy eigen value of a free particle is
(A) one (B) two (C) three (D) four
Ans: B
31. The internal energy of a real gas is
(A) The KE of molecules (B) The sum of KE and PE of molecules due to their mutual forces of attraction
(C) The PE of molecules (D) Equal to that of an equal amount of ideal gas
Ans: B
32. The increase in the internal energy of a thermodynamic system undergoing a change of state is equal to
(A) The heat transferred into the system (B) The sum of heat transferred into the system and work done by the system
(C) The difference of heat transferred into the system and work done by the system (D) The work done by the system
Ans: C
33. Which of the following statements is (are) correct?
I. Heat energy is a path function
II. Work done is a path function
III. Internal energy is a path function
(A) I only
(B) II only
(C) I and II
(D) I, II and III
Ans: C
34. The net change in the internal energy of the universe is always
(A) Zero (B) Infinite (C) Positive (D) Negative
Ans: A
35. The statement that “heat cannot flow of itself from a colder body to a hotter body” is made by
(A) Clausius (B) Lord Kelvin (C) Max Planck (D) Kelvin-Planck
Ans: C
36. According to the third law of thermodynamics, at absolute zero temperature, the molecules of the system are in perfect order and its entropy
(A) Is always positive (B) Is always negative (C) Is always zero (D) Tends to zero
Ans: D
37. Two ends of a rod are kept at 1270 C and 2270 C. The change in entropy is 20 cal/ K. Then the amount of heat flown in the rod is
(A) 200 cal (B) 400 cal (C) 2000 cal (D) 4000 cal
Ans: C
38. When applied to solar radiation, Planck’s law reduces to Wien’s law in the
(A) Ultra violet region (B) Microwave region (C) Infra red region (D) Visible region
Ans: A
39. The phase space consists of ‘n’ position and ‘n’ momentum co-ordinates. Then the total number of freedom of the group is
(A) nf (B) 2nf (C) nf/2 (D) f
Ans: B
40. If four distinguishable particles are to be arranged in two phase cells. Then the possible number of macro and micro states are respectively
(A) 4,16 (B) 5, 16 (C) 4, 18 (D) 5, 18
Ans: B
41. The probability of occupation of an electron in Fermi level is ‘1/2’ if
(A) T= 0 K (B) T > 0 K (C) T < 0 K (D) T=1
Ans: B
42. Moving coil ammeter is ________ instrument.
(A) an indicating (B) a controlling
(C) a recording (D) a digital
Ans: A
43. Fiber optic cable carry signals in the form of ________ energy.
(A) light (B) electric
(C) magnetic (D) heat
Ans: A
44. Hot wire anemometer is an instrument used to measure ________.
(A) impedance (B) flow
(C) RBC count (D) e.m.f.
Ans: B
45. ________ is the unit of resistivity.
(A) Ohm.metre square (B) Ohm/metre
(C) Ohm/metre square (D) Ohm.metre
Ans: D
46. In vibration measurement, ________ is used as a transducer to sense displacement, velocity and accelaration.
(A) accelerometer (B) pressure guage
(C) manometer (D) tachometer
Ans: A
47. If a strip of conducting material carries current in presence of tranverse magnetic field, an e.m.f. will be produced between the two edges of the material and this property is called ________.
(A) seebeck effect (B) piezo electric effect
(C) hall effect (D) induction effect
Ans: C
48. ________ is defined as the mass of water vapour present per unit volume.
(A) Relative humidity (B) Relative viscosity
(C) Apparent viscosity (D) Absolute humidity
Ans: D
49. To minimize ________ error, accurate analog meters are provided with mirrored scales.
(A) random (B) parallax
(C) gross (D) instrumental
Ans: B
50. The resolution of D/A converter is approximately .2% of its full scale range. It is
(A) 8-bit converter (B) 4-bit converter (C) 9-bit converter (D) 12-bit converter
Ans: C
51. In a NTC thermistor, resistivity ________ with the decrease in temperature.
(A) increases (B) decreases
(C) will go up and down (D) has no effect
Ans: A
52. ________ is commonly used for high value insulation resistance measurement.
(A) CRO (B) DSO
(C) Meggar (D) Multimeter
Ans: C
53. Light dependent resistor is an example of ________ device.
(A) photo emissive (B) photo conductive
(C) photo voltaic (D) self generative
Ans: B
54. The power rating of a 100 ohm resistor carrying a current of 90 mA should be
(A) 2 W (B) 1/4 W (C) 1 W (D) 1/2 W
Ans: C
55. An arrangement of elastic member as primary transducer and a strain guage attached with it as secondary transducer, is called _______. (A) bellow (B) venturi meter (C) guage meter (D) load cell
Ans: D
56. In an ECG machine, CRT acts as _______.
(A) an analog to digital converter element (B) a data presentation element (C) a data sensing element (D) a data processing element
Ans: B
57. LVDT is a variable _______ transducer.
(A) inductive (B) resistive (C) capacitive (D) semiconductor
Ans: A
58. Unit of dynamic viscosity is _______.
(A) N.s/m3 (B) N.s/m (C) N.s/m2 (D) N.s.m
Ans: C
59. Externally powered transducers are called _______ transducers.
(A) null (B) active (C) power (D) passive
Ans: D
60. Chromatography technique is used to study the _______.
(A) presence of fire
(B) hidden codes in a coded digital information
(C) components of a sample mixture
(D) frequency spectrum of radio waves
Ans: C
61. A very high sensitive strain guage will have _______ guage factor.
(A) very low (B) high (C) zero (D) minimum
Ans: B
62. Let XL be the inductive reactance of a coil and XC be the capacitive reactance of a capacitor. Both are connected in parallel. At resonance frequency, _______.
(A) XL will be equal to XC
(B) XL will be equal to 1/XC
(C) XL will be equal to 16XC
(D) XC will be equal to 16XL
Ans: A
63. The stroboscope is used for the measurement of ______.
(A) viscosity (B) pressure (C) temperature (D) periodic rotary motion
Ans: D
64. When a ferromagnetic material is subjected to a changing magnetization, its dimensions will change. This property is known as ______. (A) Magneto resistive effect
(B) Magneto strictive effect
(C) Electromagnetic induction effect
(D) Piezo electric effect
Ans: B
65. An equipment consumes 115 W, when it is connected to a 230 V/50 Hz ac power source. The alternating current through the equipment will be ______ amperes.
(A) 115/230
(B) 115/50
(C) 230/115
(D) 50 · 115/230
Ans: A
66. Radiation pyrometers are used to measure ______.
(A) very low pressure (B) very high pressure (C) very high temperature (D) very low temperature
Ans: C
67. In a capacitive hygrometer, ______ of the capacitor changes according to the humidity.
(A) area of plates in action (B) distance between the plates (C) inductive reactance (D) dielectric constant
Ans: D
68. The smallest increment in the input quantity that can be detected by a measuring instrument is called its ______.
(A) loading effect (B) resolution (C) accuracy (D) precision
Ans: B
69. Which of the following used in narrowband RF frequency multiplier ?
(A) Zener diode (B) Tunnel diode (C) P-N junction diode (D) Varactor diode
Ans: D
70. Pirani guage is used to measure ______.
(A) humidity (B) diameter (C) pH (D) pressure
Ans: D
71. RC snubber circuit used for
(A) di/dt Protection (B) Over voltage Protection (C) Over Current Protection (D) dv/dt Protection
Ans: D
72. Programmable language used in PLC
(A) VHDL (B) ladder logic (C) Embedded C (D) python
Ans: B
73. In thyristor the time interval between 10% of gate current and 10% of thyristor on state anode current is known as
(A) turn-on time (B) rise time (C) delay time (D) spread time
Ans: C
74. DIAC act as a
(A) bidirectional avalanche diode (B) bipolar transistor (C) bidirectional SCR (D) unijunction
Ans: A
75. FET phototransistor have
(A) less sensitive and low offset voltage
(B) more sensitive and low offset voltage
(C) more sensitive and high offset voltage
(D) less sensitive and high offset voltage
Ans: B
76. The spherical shape of rain drops are due to ________.
(A) surface tension (B) adhesion (C) cohesion (D) viscosity
Ans: A
77. For maximum discharge the included angle of a triangular notch is ________.
(A) 30° (B) 45° (C) 60° (D) 90°
Ans: D
78. In a lathe, the power transmitted by the lead screw to the carriage is through ________.
(A) gear box (B) wom and gear (C) half nut (D) rack and pinion
Ans: C
79. The unit of kinematic viscosity is ________.
(A) stoke (B) poise (C) pascal (D) faraday
Ans: A
80. For laminar flow; Reynolds number
A) is more than 2000 (B) is less than 2000 (C) lies between 2000 and 3000 (D) lies between 3000 and 4000
Ans: B
81. Slow plastic deformation of metal under constant stress is known as ________.
(A) fatigue (B) pressure tunnel (C) creep (D) stiffness
Ans: C
82. The device used for mixing air and petrol before admitting into the engine cylinder is ________.
(A) super charger (B) carburettor (C) induction manifold (D) throttle valve
Ans: B
83. In IC engines ,the reciprocating motion of the piston is converted into the rotary motion of the crankshaft by ________.
(A) connecting rod (B) piston rod (C) crank (D) rocker arms
Ans: A
84. The work done in compressing air is maximum, when the compression is ________.
(A) isothermal (B) polytropic (C) adiabatic (D) none of the above
Ans: C
85. When the pressure increases, the latent heat of steam ________.
(A) remains same (B) decreases (C) increases (D) none of the above
Ans: B
86. Ratio of majority to minority diffusion current in germanium is
(A) 1 (B) 0.5
(C) 0.25 (D) 2
Ans: D
87. The GaAs tunnel diodes have
(A) Low peak voltage to valley point ratio
(B) High peak voltage to valley point ratio
(C) Lowest negative differential resistance
(D) Low tunnel current
Ans: B
88. The ripple factor decreases with
(A) Decrease in C (B) Increase in C
(C) Increase in frequency (D) Decrease in frequency
Ans: B
89. If one of diode in bridge full wave rectifier is opens, the output is
(A) 0 V
(B) One fourth the amplitude of input voltage
(C) A half wave rectified voltage
(D) A 120 Hz voltage
Ans: C
90. The average value of halfwave rectified voltage with a peak value of 200 V is
(A) 63.7 V (B) 127.3 V
(C) 141 V (D) 0 V
Ans: A
91. The control rods in nuclear reactor are to control ________.
(A) temperature (B) absorption of neutrons (C) pressure (D) fuel consumption
Ans: B
92. ________ is a water tube boiler.
(A) Cochran boiler (B) Cornish boiler (C) Lancashire boiler (D) Babcock and Wilcox boiler
Ans: D
93. The square hole provided on the top surface of the anvil is called ________.
(A) spud hole (B) drift hole (C) hardie hole (D) pritchel hole
Ans: C
94. Method of governing used mainly in diesel engine is ________.
(A) quality governing (B) quantity governing (C) combined governing (D) partial governing
Ans: A
95. Internal energy of a substance depends on ________.
(A) volume (B) pressure (C) temperature (D) entropy
Ans: C
96. The efficiency of a Carnot engine depends on the ________.
(A) working substance (B) design of engine (C) size of engine (D) temperature of source and sink
Ans: D
97. ________ is used to check the clearances between two mating surfaces.
(A) Radius gauge (B) Feeler gauge (C) Fillet gauge (D) Pitch gauge
Ans: B
98. The forging operation that consist of increasing the cross section of a bar is called
(A) upsetting (B) scarfing (C) drawing (D) setting
Ans: A
99. If the standard time to complete a work is 20 hours and the actual time taken to complete the work is 15 hours with a wage rate of ` 100/- per hour, then the total earnings of a worker under Rowan plan is rupees ________
(A) 1675 (B) 1875 (C) 1500 (D) 2000
Ans: B
100. The father of Scientific Management is ________.
(A) F.W Taylor (B) H.C. Gantt (C) Robert Owen (D) Meta Calfe
Ans: A
(A) increases (B) decreases
(C) will go up and down (D) has no effect
Ans: A
52. ________ is commonly used for high value insulation resistance measurement.
(A) CRO (B) DSO
(C) Meggar (D) Multimeter
Ans: C
53. Light dependent resistor is an example of ________ device.
(A) photo emissive (B) photo conductive
(C) photo voltaic (D) self generative
Ans: B
54. The power rating of a 100 ohm resistor carrying a current of 90 mA should be
(A) 2 W (B) 1/4 W (C) 1 W (D) 1/2 W
Ans: C
55. An arrangement of elastic member as primary transducer and a strain guage attached with it as secondary transducer, is called _______. (A) bellow (B) venturi meter (C) guage meter (D) load cell
Ans: D
56. In an ECG machine, CRT acts as _______.
(A) an analog to digital converter element (B) a data presentation element (C) a data sensing element (D) a data processing element
Ans: B
57. LVDT is a variable _______ transducer.
(A) inductive (B) resistive (C) capacitive (D) semiconductor
Ans: A
58. Unit of dynamic viscosity is _______.
(A) N.s/m3 (B) N.s/m (C) N.s/m2 (D) N.s.m
Ans: C
59. Externally powered transducers are called _______ transducers.
(A) null (B) active (C) power (D) passive
Ans: D
60. Chromatography technique is used to study the _______.
(A) presence of fire
(B) hidden codes in a coded digital information
(C) components of a sample mixture
(D) frequency spectrum of radio waves
Ans: C
61. A very high sensitive strain guage will have _______ guage factor.
(A) very low (B) high (C) zero (D) minimum
Ans: B
62. Let XL be the inductive reactance of a coil and XC be the capacitive reactance of a capacitor. Both are connected in parallel. At resonance frequency, _______.
(A) XL will be equal to XC
(B) XL will be equal to 1/XC
(C) XL will be equal to 16XC
(D) XC will be equal to 16XL
Ans: A
63. The stroboscope is used for the measurement of ______.
(A) viscosity (B) pressure (C) temperature (D) periodic rotary motion
Ans: D
64. When a ferromagnetic material is subjected to a changing magnetization, its dimensions will change. This property is known as ______. (A) Magneto resistive effect
(B) Magneto strictive effect
(C) Electromagnetic induction effect
(D) Piezo electric effect
Ans: B
65. An equipment consumes 115 W, when it is connected to a 230 V/50 Hz ac power source. The alternating current through the equipment will be ______ amperes.
(A) 115/230
(B) 115/50
(C) 230/115
(D) 50 · 115/230
Ans: A
66. Radiation pyrometers are used to measure ______.
(A) very low pressure (B) very high pressure (C) very high temperature (D) very low temperature
Ans: C
67. In a capacitive hygrometer, ______ of the capacitor changes according to the humidity.
(A) area of plates in action (B) distance between the plates (C) inductive reactance (D) dielectric constant
Ans: D
68. The smallest increment in the input quantity that can be detected by a measuring instrument is called its ______.
(A) loading effect (B) resolution (C) accuracy (D) precision
Ans: B
69. Which of the following used in narrowband RF frequency multiplier ?
(A) Zener diode (B) Tunnel diode (C) P-N junction diode (D) Varactor diode
Ans: D
70. Pirani guage is used to measure ______.
(A) humidity (B) diameter (C) pH (D) pressure
Ans: D
71. RC snubber circuit used for
(A) di/dt Protection (B) Over voltage Protection (C) Over Current Protection (D) dv/dt Protection
Ans: D
72. Programmable language used in PLC
(A) VHDL (B) ladder logic (C) Embedded C (D) python
Ans: B
73. In thyristor the time interval between 10% of gate current and 10% of thyristor on state anode current is known as
(A) turn-on time (B) rise time (C) delay time (D) spread time
Ans: C
74. DIAC act as a
(A) bidirectional avalanche diode (B) bipolar transistor (C) bidirectional SCR (D) unijunction
Ans: A
75. FET phototransistor have
(A) less sensitive and low offset voltage
(B) more sensitive and low offset voltage
(C) more sensitive and high offset voltage
(D) less sensitive and high offset voltage
Ans: B
76. The spherical shape of rain drops are due to ________.
(A) surface tension (B) adhesion (C) cohesion (D) viscosity
Ans: A
77. For maximum discharge the included angle of a triangular notch is ________.
(A) 30° (B) 45° (C) 60° (D) 90°
Ans: D
78. In a lathe, the power transmitted by the lead screw to the carriage is through ________.
(A) gear box (B) wom and gear (C) half nut (D) rack and pinion
Ans: C
79. The unit of kinematic viscosity is ________.
(A) stoke (B) poise (C) pascal (D) faraday
Ans: A
80. For laminar flow; Reynolds number
A) is more than 2000 (B) is less than 2000 (C) lies between 2000 and 3000 (D) lies between 3000 and 4000
Ans: B
81. Slow plastic deformation of metal under constant stress is known as ________.
(A) fatigue (B) pressure tunnel (C) creep (D) stiffness
Ans: C
82. The device used for mixing air and petrol before admitting into the engine cylinder is ________.
(A) super charger (B) carburettor (C) induction manifold (D) throttle valve
Ans: B
83. In IC engines ,the reciprocating motion of the piston is converted into the rotary motion of the crankshaft by ________.
(A) connecting rod (B) piston rod (C) crank (D) rocker arms
Ans: A
84. The work done in compressing air is maximum, when the compression is ________.
(A) isothermal (B) polytropic (C) adiabatic (D) none of the above
Ans: C
85. When the pressure increases, the latent heat of steam ________.
(A) remains same (B) decreases (C) increases (D) none of the above
Ans: B
86. Ratio of majority to minority diffusion current in germanium is
(A) 1 (B) 0.5
(C) 0.25 (D) 2
Ans: D
87. The GaAs tunnel diodes have
(A) Low peak voltage to valley point ratio
(B) High peak voltage to valley point ratio
(C) Lowest negative differential resistance
(D) Low tunnel current
Ans: B
88. The ripple factor decreases with
(A) Decrease in C (B) Increase in C
(C) Increase in frequency (D) Decrease in frequency
Ans: B
89. If one of diode in bridge full wave rectifier is opens, the output is
(A) 0 V
(B) One fourth the amplitude of input voltage
(C) A half wave rectified voltage
(D) A 120 Hz voltage
Ans: C
90. The average value of halfwave rectified voltage with a peak value of 200 V is
(A) 63.7 V (B) 127.3 V
(C) 141 V (D) 0 V
Ans: A
91. The control rods in nuclear reactor are to control ________.
(A) temperature (B) absorption of neutrons (C) pressure (D) fuel consumption
Ans: B
92. ________ is a water tube boiler.
(A) Cochran boiler (B) Cornish boiler (C) Lancashire boiler (D) Babcock and Wilcox boiler
Ans: D
93. The square hole provided on the top surface of the anvil is called ________.
(A) spud hole (B) drift hole (C) hardie hole (D) pritchel hole
Ans: C
94. Method of governing used mainly in diesel engine is ________.
(A) quality governing (B) quantity governing (C) combined governing (D) partial governing
Ans: A
95. Internal energy of a substance depends on ________.
(A) volume (B) pressure (C) temperature (D) entropy
Ans: C
96. The efficiency of a Carnot engine depends on the ________.
(A) working substance (B) design of engine (C) size of engine (D) temperature of source and sink
Ans: D
97. ________ is used to check the clearances between two mating surfaces.
(A) Radius gauge (B) Feeler gauge (C) Fillet gauge (D) Pitch gauge
Ans: B
98. The forging operation that consist of increasing the cross section of a bar is called
(A) upsetting (B) scarfing (C) drawing (D) setting
Ans: A
99. If the standard time to complete a work is 20 hours and the actual time taken to complete the work is 15 hours with a wage rate of ` 100/- per hour, then the total earnings of a worker under Rowan plan is rupees ________
(A) 1675 (B) 1875 (C) 1500 (D) 2000
Ans: B
100. The father of Scientific Management is ________.
(A) F.W Taylor (B) H.C. Gantt (C) Robert Owen (D) Meta Calfe
Ans: A