BASIC ENGINEERING -PAGE 4
BASIC ENGINEERING MCQs- PAGE 4
1. The engine of the aeroplane rotates in clockwise direction when seen from the tail end and the aeroplane takes a turn to the left. The effect of gyroscopic couple on the aeroplane will be?
(A) To raise the nose and dip the tail (B) To dip the nose and raise the tail
(C) To raise the nose and tail (D) To dip the nose and tail
Ans: A
2. An instrument which detects electric current is known as ..............
(A) Voltmeter (B) Rheostat (C) Wattmeter (D) Galvanometer
Ans: D
3. The unit of luminous flux is ..............
(A) Steradian (B) Candela (C) Lumen (D) Lux
Ans: C
4. Which of the following does not change in a transformer?
(A) Current (B) Voltage (C) Frequency (D) None of these
Ans: C
5. A transformer core is laminated to
(A) Reduce hysteresis loss (B) Reduce eddy current losses (C) Reduce copper losses (D) Reduce all above losses
Ans: B
6. What is LINUX ?
(A) Malware (B) Operating System (C) Application Program (D) Firmware
Ans: B
7. The working principle of transformer depends upon
(A) Ohm’s Law (B) Lenz Law (C) Faraday’s law of electromagnetic induction (D) Flemings left hand rule
Ans: C
8. A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is ..............
(A) 400 Ω (B) 600 Ω (C) 800 Ω (D) 1000 Ω
Ans: C
9. Due to slip of the belt, the velocity ratio of the belt drive
(A) Remains same (B) Decreases (C) Increases (D) None of the options
Ans: B
10. Which is the best conductor of electricity?
(A) Iron (B) Silver (C) Copper (D) Carbon
Ans: B
11. For which of the following ‘ampere second’ could be the unit?
(A) Reluctance (B) Charge (C) Power (D) Energy
Ans: B
12. The rating of a fuse wire is always expressed in ..............
(A) Ampere-hours (B) Ampere-volts (C) kWh (D) Amperes
Ans: D
13. The filament of an electric bulb is made of ..............
(A) Carbon (B) Aluminum (C) Tungsten (D) Nickel
Ans: C
14. Kirchhoff’s current law is applied at
(A) Loops (B) Nodes (C) Both loop and node (D) None of these
Ans: B
15. For a frequency of 200 Hz, the time period will be ..............
(A) 0.05 s (B) 0.005 s (C) 0.0005 s (D) 0.5 s
Ans: B
16. In shaper machine the time taken during the idle stroke is less as compared to forward cutting stroke and this is obtained by .............. mechanism
(A) Clapper box (B) Back gear (C) Quick return (D) None of the options
Ans: C
17. Power factor of the following circuit will be unity
(A) Inductance (B) Capacitance (C) Resistance (D) Both Inductance & Capacitance
Ans: C
18. What is the relation between number of parallel paths (A) and number of poles (P) for lap winding in DC machines?
(A) A = P (B) A < P (C) A > P (D) None of these
Ans: A
19. The critical resistance of the D.C. generator is the resistance of ..............
(A) Field (B) Brushes (C) Armature (D) Load
Ans: A
20. Candela is the unit of ..............
(A) Luminous flux (B) Luminous intensity (C) Wavelength (D) None of these
Ans: B
21. In a pure inductive circuit
(A) The current is in phase with the voltage (B) The current lags behind the voltage by 90°
(C) The current leads the voltage by 90° (D) None of these
Ans: B
22. A tensile test uses a test specimen that has a gage length of 50 mm and cross section area is 200 square mm. During the test the specimen yields under a load of 98,000 N. Determine yield strength.
(A) 1960 MPa (B) 300 MPa (C) 490 MPa (D) None of the options
Ans: C
23. Orsat apparatus is used for
(A) Gravimetric analysis of flue gas (B) Volumetric analysis of flue gas (C) Mass flow of flue gas (D) None of the options
Ans: B
24. The equation of 50 Hz current sine wave having RMS values of 60 A is................
(A) 60 sin 25 t (B) 60 sin 50 t (C) 84.84 sin 314 t (D) 42.42 sin 314 t
Ans: C
25. Which of the following part is used in construction of DC machine but not in AC machine?
(A) Armature winding (B) Field winding (C) Commutator (D) Shaft
Ans: C
26. Armature control method is used to control the speed of motor
(A) Above rated speed (B) Below rated speed (C) Can be used anywhere (D) None of these
Ans: B
27. Hopkinson’s test requires
(A) One DC machine on which test is carried out (B) Two different DC machines
(C) Two identical DC machines (D) Can be worked with one or two machines
Ans: C
28. The speed of a D.C. shunt motor more than its full-load speed can be obtained by
(A) Decreasing the field current (B) Increasing the field current
(C) Decreasing the armature current (D) Increasing the armature current
Ans: A
29. What will be the effect of opening of field of a DC shunt motor while motor is running?
(A) The speed of motor will be reduced (B) The armature current will reduce
(C) The motor will attain dangerously high speed (D) The motor will continue to constant speed
Ans: C
30. Direction of rotation of motor is determined by
(A) Faraday’s law (B) Lenz’s law (C) Coulomb’s law (D) Fleming’s left-hand rule
Ans: D
31. If the procurement cost become half and the carrying cost doubles the Economic Order Quantity become : (A) half (B) double (C) remain same (D) one forth
Ans: A
32. The wage plan which guarantees minimum wage is : (A) Hallsey Plan (B) Gnatt Plan (C) Emmersons efficiency plan (D) All of the above
Ans: D
33. As per ABC analysis, the item which consists more than 70% of total item with 5% to 10% inventory cost will come under : (A) A type (B) B type (C) C type (D) None of the above
Ans: C
34. The terms that is not included in the PERT terminology is : (A) Event (B) Node (C) Slack (D) Network Diagram
Ans: B
35. The control chart based on variables is : (A) P Chart (B) C Chart (C) R Chart (D) U Chart
Ans: C
36:-TPI of a thread is 10. Then pitch is
A: 1 inch
B: 1.1 inch
C: 0.01 inch
D: 0.1 inch
Ans: D
37:-A device which holds and locate a workpiece and guides the cutting tool is called
A: Fixture
B: Clamps
C: Jig
D: Vice
Ans: C
38:-To provide protective coating on Aluminium, which one of the following is suitable ?
A: Galvanising
B: Cladding
C: Anodizing
D: Bluing
Ans: C
39:-Vice clamps are used to
A: Protect the serrated jaws of the vice
B: Protect the file
C: Hold the job firmly
D: Protect the finished surface of the job
Ans: D
40:-Which one of the following indicates the grade of file ?
A: Second cut
B: Single cut
C: Double cut
D: Rasp cut
Ans: A
41:-Which of the following is an example of linear measuring instrument ?
A: Straight edge
B: Steel rule
C: Spirit level
D: Bevel protractor
Ans: B
42:-Caliper with one leg is bent and the other leg is straight called
A: Hermaphrodite caliper
B: Inside caliper
C: Outside caliper
D: Vernier caliper
Ans: A
43:-Any mineral body from which metal can be economically recovered is called
A: Alloy
B: Element
C: Flux
D: Ore
Ans: D
44:-Furnace used for the production of cast iron is
A: Blast furnace
B: Electric furnace
C: Cupola furnace
D: Reverberatory furnace
Ans: C
45:-Hand file is also known as
A: Safe edge file
B: Square file
C: Flat file
D: Needle file
Ans: A
46:-High carbon steel contains
A: 0.15% to 0.45% carbon
B: 0.03% to 0.05% carbon
C: 0.8% to 1.5% carbon
D: 0.03% to 0.10% carbon
Ans: C
47:-Galena is the ore of
A: Aluminium
B: Lead
C: Copper
D: Tin
Ans: B
48:-Least count of Metric Vernier Caliper
A: 0.02 mm
B: 0.01 mm
C: 0.10 mm
D: 0.20 mm
Ans: A
49:-Centre punch is ground to an angle of
A: 30°
B: 45°
C: 60°
D: 90°
Ans: D
50:-In 18-4-1 H.S.S. tool, 18 represent the part of
A: Chromium
B: Molybdenum
C: Tungsten
D: Vanadium
Ans: C
(A) To raise the nose and dip the tail (B) To dip the nose and raise the tail
(C) To raise the nose and tail (D) To dip the nose and tail
Ans: A
2. An instrument which detects electric current is known as ..............
(A) Voltmeter (B) Rheostat (C) Wattmeter (D) Galvanometer
Ans: D
3. The unit of luminous flux is ..............
(A) Steradian (B) Candela (C) Lumen (D) Lux
Ans: C
4. Which of the following does not change in a transformer?
(A) Current (B) Voltage (C) Frequency (D) None of these
Ans: C
5. A transformer core is laminated to
(A) Reduce hysteresis loss (B) Reduce eddy current losses (C) Reduce copper losses (D) Reduce all above losses
Ans: B
6. What is LINUX ?
(A) Malware (B) Operating System (C) Application Program (D) Firmware
Ans: B
7. The working principle of transformer depends upon
(A) Ohm’s Law (B) Lenz Law (C) Faraday’s law of electromagnetic induction (D) Flemings left hand rule
Ans: C
8. A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is ..............
(A) 400 Ω (B) 600 Ω (C) 800 Ω (D) 1000 Ω
Ans: C
9. Due to slip of the belt, the velocity ratio of the belt drive
(A) Remains same (B) Decreases (C) Increases (D) None of the options
Ans: B
10. Which is the best conductor of electricity?
(A) Iron (B) Silver (C) Copper (D) Carbon
Ans: B
11. For which of the following ‘ampere second’ could be the unit?
(A) Reluctance (B) Charge (C) Power (D) Energy
Ans: B
12. The rating of a fuse wire is always expressed in ..............
(A) Ampere-hours (B) Ampere-volts (C) kWh (D) Amperes
Ans: D
13. The filament of an electric bulb is made of ..............
(A) Carbon (B) Aluminum (C) Tungsten (D) Nickel
Ans: C
14. Kirchhoff’s current law is applied at
(A) Loops (B) Nodes (C) Both loop and node (D) None of these
Ans: B
15. For a frequency of 200 Hz, the time period will be ..............
(A) 0.05 s (B) 0.005 s (C) 0.0005 s (D) 0.5 s
Ans: B
16. In shaper machine the time taken during the idle stroke is less as compared to forward cutting stroke and this is obtained by .............. mechanism
(A) Clapper box (B) Back gear (C) Quick return (D) None of the options
Ans: C
17. Power factor of the following circuit will be unity
(A) Inductance (B) Capacitance (C) Resistance (D) Both Inductance & Capacitance
Ans: C
18. What is the relation between number of parallel paths (A) and number of poles (P) for lap winding in DC machines?
(A) A = P (B) A < P (C) A > P (D) None of these
Ans: A
19. The critical resistance of the D.C. generator is the resistance of ..............
(A) Field (B) Brushes (C) Armature (D) Load
Ans: A
20. Candela is the unit of ..............
(A) Luminous flux (B) Luminous intensity (C) Wavelength (D) None of these
Ans: B
21. In a pure inductive circuit
(A) The current is in phase with the voltage (B) The current lags behind the voltage by 90°
(C) The current leads the voltage by 90° (D) None of these
Ans: B
22. A tensile test uses a test specimen that has a gage length of 50 mm and cross section area is 200 square mm. During the test the specimen yields under a load of 98,000 N. Determine yield strength.
(A) 1960 MPa (B) 300 MPa (C) 490 MPa (D) None of the options
Ans: C
23. Orsat apparatus is used for
(A) Gravimetric analysis of flue gas (B) Volumetric analysis of flue gas (C) Mass flow of flue gas (D) None of the options
Ans: B
24. The equation of 50 Hz current sine wave having RMS values of 60 A is................
(A) 60 sin 25 t (B) 60 sin 50 t (C) 84.84 sin 314 t (D) 42.42 sin 314 t
Ans: C
25. Which of the following part is used in construction of DC machine but not in AC machine?
(A) Armature winding (B) Field winding (C) Commutator (D) Shaft
Ans: C
26. Armature control method is used to control the speed of motor
(A) Above rated speed (B) Below rated speed (C) Can be used anywhere (D) None of these
Ans: B
27. Hopkinson’s test requires
(A) One DC machine on which test is carried out (B) Two different DC machines
(C) Two identical DC machines (D) Can be worked with one or two machines
Ans: C
28. The speed of a D.C. shunt motor more than its full-load speed can be obtained by
(A) Decreasing the field current (B) Increasing the field current
(C) Decreasing the armature current (D) Increasing the armature current
Ans: A
29. What will be the effect of opening of field of a DC shunt motor while motor is running?
(A) The speed of motor will be reduced (B) The armature current will reduce
(C) The motor will attain dangerously high speed (D) The motor will continue to constant speed
Ans: C
30. Direction of rotation of motor is determined by
(A) Faraday’s law (B) Lenz’s law (C) Coulomb’s law (D) Fleming’s left-hand rule
Ans: D
31. If the procurement cost become half and the carrying cost doubles the Economic Order Quantity become : (A) half (B) double (C) remain same (D) one forth
Ans: A
32. The wage plan which guarantees minimum wage is : (A) Hallsey Plan (B) Gnatt Plan (C) Emmersons efficiency plan (D) All of the above
Ans: D
33. As per ABC analysis, the item which consists more than 70% of total item with 5% to 10% inventory cost will come under : (A) A type (B) B type (C) C type (D) None of the above
Ans: C
34. The terms that is not included in the PERT terminology is : (A) Event (B) Node (C) Slack (D) Network Diagram
Ans: B
35. The control chart based on variables is : (A) P Chart (B) C Chart (C) R Chart (D) U Chart
Ans: C
36:-TPI of a thread is 10. Then pitch is
A: 1 inch
B: 1.1 inch
C: 0.01 inch
D: 0.1 inch
Ans: D
37:-A device which holds and locate a workpiece and guides the cutting tool is called
A: Fixture
B: Clamps
C: Jig
D: Vice
Ans: C
38:-To provide protective coating on Aluminium, which one of the following is suitable ?
A: Galvanising
B: Cladding
C: Anodizing
D: Bluing
Ans: C
39:-Vice clamps are used to
A: Protect the serrated jaws of the vice
B: Protect the file
C: Hold the job firmly
D: Protect the finished surface of the job
Ans: D
40:-Which one of the following indicates the grade of file ?
A: Second cut
B: Single cut
C: Double cut
D: Rasp cut
Ans: A
41:-Which of the following is an example of linear measuring instrument ?
A: Straight edge
B: Steel rule
C: Spirit level
D: Bevel protractor
Ans: B
42:-Caliper with one leg is bent and the other leg is straight called
A: Hermaphrodite caliper
B: Inside caliper
C: Outside caliper
D: Vernier caliper
Ans: A
43:-Any mineral body from which metal can be economically recovered is called
A: Alloy
B: Element
C: Flux
D: Ore
Ans: D
44:-Furnace used for the production of cast iron is
A: Blast furnace
B: Electric furnace
C: Cupola furnace
D: Reverberatory furnace
Ans: C
45:-Hand file is also known as
A: Safe edge file
B: Square file
C: Flat file
D: Needle file
Ans: A
46:-High carbon steel contains
A: 0.15% to 0.45% carbon
B: 0.03% to 0.05% carbon
C: 0.8% to 1.5% carbon
D: 0.03% to 0.10% carbon
Ans: C
47:-Galena is the ore of
A: Aluminium
B: Lead
C: Copper
D: Tin
Ans: B
48:-Least count of Metric Vernier Caliper
A: 0.02 mm
B: 0.01 mm
C: 0.10 mm
D: 0.20 mm
Ans: A
49:-Centre punch is ground to an angle of
A: 30°
B: 45°
C: 60°
D: 90°
Ans: D
50:-In 18-4-1 H.S.S. tool, 18 represent the part of
A: Chromium
B: Molybdenum
C: Tungsten
D: Vanadium
Ans: C
51:-Tool used for cutting internal thread into a hole
A: Reamer
B: Tap
C: Die
D: Stud extractor
Ans: B
52:-A wedge like tool used to remove the taper shank drill from the nose of drilling machine spindle is
A: Drill chuck key
B: Chisel
C: Allen key
D: Drill drift
Ans: D
53:-The direction of filing stroke is perpendicular to the axis of file in
A: Straight filing
B: Cross filing
C: Draw filing
D: None of these
Ans: C
54:-The chisel used for cutting oil grooves in bearing is
A: Round nose chisel
B: Cross cut chisel
C: Flat chisel
D: Cold chisel
Ans: A
55:-Thread usually found in screw jack
A: V-Thread
B: Acme thread
C: Knuckle thread
D: Square thread
Ans: D
56:-A headless bolt threaded at both end is called
A: Screw
B: Stud
C: Rivet
D: Thread extractor
Ans: B
57:-Fit adopted in cart wheel fixing
A: Shrink fit
B: Running fit
C: Push fit
D: sliding fit
Ans: A
58:-Which file has 100 to 120 teeth per 25 mm ?
A: Rough file
B: Second cut file
C: Dead smooth file
D: Bastard file
Ans: C
59:-Liquid carburising is also known as
A: Nitriding
B: Cyaniding
C: Hardening
D: Annealing
Ans: B
60:-Temperature at which oil turn into steam and evaporate is called
A: Fire point
B: Viscosity
C: Pour point
D: Flash point
Ans: D
61:-Nut used in Hacksaw frame
A: Wing nut
B: Cap nut
C: Castle nut
D: Ring nut
Ans: A
62:-A uniform increase or decrease in diameter along the length of a cylinder is called
A: Step cut
B: Chamfer
C: Thread
D: Taper
Ans: D
63:-Teeth of similar shapes are cut parallel to shaft in
A: Bevel gear
B: Spur gear
C: Helical gear
D: Worm gear
Ans: B
64:-A natural abrasive is
A: Aluminium oxide
B: Silicon carbide
C: Emery
D: None of these
Ans: C
65:-Fixtures used for
A: Holding and locating workpiece
B: Control the machine
C: Guide the cutting tool
D: Holding the workpiece and guide the cutting tool
Ans: A
66:-The distance from a point on one thread to the corresponding point on the next thread is
A: Lead
B: Start
C: Pitch
D: Crest
Ans: C
67:-A tin base alloy containing 88% tin, 8% antimony and 4% copper is called
A: Gun metal
B: Y-alloy
C: Monel metal
D: Babbit metal
Ans: D
68:-When rotating a nut over a bolt, if the nut advance axially when rotating the nut in an anticlockwise direction it indicate
A: Left hand thread
B: Right hand thread
C: Multi start thread
D: Error in thread
Ans: A
69:-In order to change the properties and characteristics of metals either heated or cooled is known as
A: Carburising
B: Nitriding
C: Heat treatment
D: Cyaniding
Ans: C
70:-While filing, the teeth of files are clogged by particles of metal is known as
A: Glazing
B: Pinning
C: Piercing
D: Spinning
Ans: B
71:-In which foundation bolt, one side is straight and the other is in taper
A: Rag type foundation bolt
B: Lewis type foundation bolt
C: Eye type foundation bolt
D: Cotter foundation bolt
Ans: B
72:-The property of a metal by virtue of which they can be drawn into wires is known as
A: Toughness
B: Malleability
C: Brittleness
D: Ductility
Ans: D
73:-The act of joining the slip gauges together while building up to size is known
A: Wringing
B: Honing
C: Setting
D: Lapping
Ans: A
74:-The taper generally used on taper shank of drills and reamers is
A: Jarno taper
B: Brown and sharp taper
C: Morse taper
D: Metric taper
Ans: C
75:-A neutral flame have
A: Excess of oxygen than acetylene
B: Equal volume of oxygen and acetylene
C: Excess of acetylene than oxygen
D: No oxygen
Ans: B
76:-The process of finishing round holes by bonded abrasive stone is called
A: Lapping
B: Reaming
C: Boring
D: Honing
Ans: D
77:-A Vernier metric micrometer shows the reading 6.214 mm. In this reading the number of Vernier scale coincide with thimble division
A: 4
B: 6
C: 21
D: 14
Ans: A
78:-Gauge used to check the outside diameter of shaft
A: Plug gauge
B: Feeler gauge
C: Snap gauge
D: Depth gauge
Ans: C
79:-To locate pulleys or gears on a shaft and prevent relative movement between them, we use
A: Nuts
B: Keys
C: Washers
D: Couplings
Ans: B
80:-A hole is to be drilled in an M. S. plate with a drill of size 15 mm, R.P.M. is 700. Find the cutting speed.
A: 23 meter/minute
B: 30 meter/minute
C: 15 meter/minute
D: 33 meter/minute
Ans: D
81:-The typical forward voltage of a yellow colour LED is
A: 2.1 V
B: 1.8 V
C: 2.2 V
D: 2.4 V
Ans: A
82:-The light of Mercury Vapour Lamp is
A: Redish orange
B: Greenish
C: Redish blue
D: White with bluish green
Ans: D
83:-To get pink colour in Neon sign Lamp _____________ chemical powder coated in the inner side of the tube.
A: Cadmium silicate
B: Zinc silicate
C: Cadmium borate
D: Calcium silicate
Ans: C
84:-Drop test of an armature is used for testing
A: Number of turns
B: Correct resistance
C: Short and open circuits
D: All of the above
Ans: D
85:-Humming sound produced by a motor is due to
A: Low voltage
B: Shorted field or armature winding
C: Dirty conductor
D: Open field conductor
Ans: B
86:-Current sensing single phasing preventers are suitable for
A: Constant voltage application motor
B: Constant load motors
C: Variable voltage application motors
D: All of the above
Ans: B
87:-The Terminals of a GTO are
A: Anode, Cathode, Gate
B: Collector, Emitter, Gate
C: Source, Drain, Gate
D: Collector, Base, Emitter
Ans: A
88:-In DC generator metal graphite brushes are used for
A: High current and high voltage application
B: Low current and low voltage application
C: High current and low voltage application
D: Low current and high voltage application
Ans: C
89:-Which of the following is not a standard accuracy class of potential transformers ?
A: 0.6
B: 0.1
C: 0.5
D: 1.0
Ans: A
90:-In Electrician Solder the percentage of Tin and Lead is
A: 60% Lead 40% Tin
B: 40% Tin 60% Copper
C: 60% Tin 40% Lead
D: 40% Zinc 60% Tin
Ans: C
91:-The instrument used for measuring speed is
A: Tong Tester
B: Tachometer
C: Hydrometer
D: Growler
Ans: B
92:-The armature current in DC motor is maximum when
A: When motor has picked up maximum speed
B: The motor has intermediate stage
C: The motor has just switched off
D: The motor has just started moving
Ans: D
93:-A series RL circuits has a R = 30 Ω and L = 40 Ω the Z is
A: 70 Ω
B: 10 Ω
C: 20 Ω
D: 50 Ω
Ans: D
94:-The Magnetic field produced in the stater of a three phase induction motor is at
A: Slip speed
B: Synchronous speed
C: Asynchronous speed
D: Rotor speed
Ans: B
95:-The heat proof insulating material used for heater base is
A: Mica
B: Glass wool
C: Cotton
D: Porcelain
Ans: A
96:-A 4 Pole 1200 rpm alternator will generate emf at the frequency of
A: 25 Hz
B: 50 Hz
C: 40 Hz
D: 60 Hz
Ans: C
97:-Conductivity of copper is approximately
A: 90%
B: 98%
C: 89%
D: 85%
Ans: A
98:-Nichrome is an alloy of
A: Nickel and cobalt
B: Nickel and Carbon
C: Nickel and chromium
D: Nickel and copper
Ans: C
99:-The unit of Magneto Motive Force (MMF) is
A: Weber
B: Henry
C: At/Wb
D: Ampere turns
Ans: D
100:-The charging of a cell at high rate is called
A: Trickle charging
B: Boost charging
C: Potential charging
D: Current charging
Ans: B
A: Reamer
B: Tap
C: Die
D: Stud extractor
Ans: B
52:-A wedge like tool used to remove the taper shank drill from the nose of drilling machine spindle is
A: Drill chuck key
B: Chisel
C: Allen key
D: Drill drift
Ans: D
53:-The direction of filing stroke is perpendicular to the axis of file in
A: Straight filing
B: Cross filing
C: Draw filing
D: None of these
Ans: C
54:-The chisel used for cutting oil grooves in bearing is
A: Round nose chisel
B: Cross cut chisel
C: Flat chisel
D: Cold chisel
Ans: A
55:-Thread usually found in screw jack
A: V-Thread
B: Acme thread
C: Knuckle thread
D: Square thread
Ans: D
56:-A headless bolt threaded at both end is called
A: Screw
B: Stud
C: Rivet
D: Thread extractor
Ans: B
57:-Fit adopted in cart wheel fixing
A: Shrink fit
B: Running fit
C: Push fit
D: sliding fit
Ans: A
58:-Which file has 100 to 120 teeth per 25 mm ?
A: Rough file
B: Second cut file
C: Dead smooth file
D: Bastard file
Ans: C
59:-Liquid carburising is also known as
A: Nitriding
B: Cyaniding
C: Hardening
D: Annealing
Ans: B
60:-Temperature at which oil turn into steam and evaporate is called
A: Fire point
B: Viscosity
C: Pour point
D: Flash point
Ans: D
61:-Nut used in Hacksaw frame
A: Wing nut
B: Cap nut
C: Castle nut
D: Ring nut
Ans: A
62:-A uniform increase or decrease in diameter along the length of a cylinder is called
A: Step cut
B: Chamfer
C: Thread
D: Taper
Ans: D
63:-Teeth of similar shapes are cut parallel to shaft in
A: Bevel gear
B: Spur gear
C: Helical gear
D: Worm gear
Ans: B
64:-A natural abrasive is
A: Aluminium oxide
B: Silicon carbide
C: Emery
D: None of these
Ans: C
65:-Fixtures used for
A: Holding and locating workpiece
B: Control the machine
C: Guide the cutting tool
D: Holding the workpiece and guide the cutting tool
Ans: A
66:-The distance from a point on one thread to the corresponding point on the next thread is
A: Lead
B: Start
C: Pitch
D: Crest
Ans: C
67:-A tin base alloy containing 88% tin, 8% antimony and 4% copper is called
A: Gun metal
B: Y-alloy
C: Monel metal
D: Babbit metal
Ans: D
68:-When rotating a nut over a bolt, if the nut advance axially when rotating the nut in an anticlockwise direction it indicate
A: Left hand thread
B: Right hand thread
C: Multi start thread
D: Error in thread
Ans: A
69:-In order to change the properties and characteristics of metals either heated or cooled is known as
A: Carburising
B: Nitriding
C: Heat treatment
D: Cyaniding
Ans: C
70:-While filing, the teeth of files are clogged by particles of metal is known as
A: Glazing
B: Pinning
C: Piercing
D: Spinning
Ans: B
71:-In which foundation bolt, one side is straight and the other is in taper
A: Rag type foundation bolt
B: Lewis type foundation bolt
C: Eye type foundation bolt
D: Cotter foundation bolt
Ans: B
72:-The property of a metal by virtue of which they can be drawn into wires is known as
A: Toughness
B: Malleability
C: Brittleness
D: Ductility
Ans: D
73:-The act of joining the slip gauges together while building up to size is known
A: Wringing
B: Honing
C: Setting
D: Lapping
Ans: A
74:-The taper generally used on taper shank of drills and reamers is
A: Jarno taper
B: Brown and sharp taper
C: Morse taper
D: Metric taper
Ans: C
75:-A neutral flame have
A: Excess of oxygen than acetylene
B: Equal volume of oxygen and acetylene
C: Excess of acetylene than oxygen
D: No oxygen
Ans: B
76:-The process of finishing round holes by bonded abrasive stone is called
A: Lapping
B: Reaming
C: Boring
D: Honing
Ans: D
77:-A Vernier metric micrometer shows the reading 6.214 mm. In this reading the number of Vernier scale coincide with thimble division
A: 4
B: 6
C: 21
D: 14
Ans: A
78:-Gauge used to check the outside diameter of shaft
A: Plug gauge
B: Feeler gauge
C: Snap gauge
D: Depth gauge
Ans: C
79:-To locate pulleys or gears on a shaft and prevent relative movement between them, we use
A: Nuts
B: Keys
C: Washers
D: Couplings
Ans: B
80:-A hole is to be drilled in an M. S. plate with a drill of size 15 mm, R.P.M. is 700. Find the cutting speed.
A: 23 meter/minute
B: 30 meter/minute
C: 15 meter/minute
D: 33 meter/minute
Ans: D
81:-The typical forward voltage of a yellow colour LED is
A: 2.1 V
B: 1.8 V
C: 2.2 V
D: 2.4 V
Ans: A
82:-The light of Mercury Vapour Lamp is
A: Redish orange
B: Greenish
C: Redish blue
D: White with bluish green
Ans: D
83:-To get pink colour in Neon sign Lamp _____________ chemical powder coated in the inner side of the tube.
A: Cadmium silicate
B: Zinc silicate
C: Cadmium borate
D: Calcium silicate
Ans: C
84:-Drop test of an armature is used for testing
A: Number of turns
B: Correct resistance
C: Short and open circuits
D: All of the above
Ans: D
85:-Humming sound produced by a motor is due to
A: Low voltage
B: Shorted field or armature winding
C: Dirty conductor
D: Open field conductor
Ans: B
86:-Current sensing single phasing preventers are suitable for
A: Constant voltage application motor
B: Constant load motors
C: Variable voltage application motors
D: All of the above
Ans: B
87:-The Terminals of a GTO are
A: Anode, Cathode, Gate
B: Collector, Emitter, Gate
C: Source, Drain, Gate
D: Collector, Base, Emitter
Ans: A
88:-In DC generator metal graphite brushes are used for
A: High current and high voltage application
B: Low current and low voltage application
C: High current and low voltage application
D: Low current and high voltage application
Ans: C
89:-Which of the following is not a standard accuracy class of potential transformers ?
A: 0.6
B: 0.1
C: 0.5
D: 1.0
Ans: A
90:-In Electrician Solder the percentage of Tin and Lead is
A: 60% Lead 40% Tin
B: 40% Tin 60% Copper
C: 60% Tin 40% Lead
D: 40% Zinc 60% Tin
Ans: C
91:-The instrument used for measuring speed is
A: Tong Tester
B: Tachometer
C: Hydrometer
D: Growler
Ans: B
92:-The armature current in DC motor is maximum when
A: When motor has picked up maximum speed
B: The motor has intermediate stage
C: The motor has just switched off
D: The motor has just started moving
Ans: D
93:-A series RL circuits has a R = 30 Ω and L = 40 Ω the Z is
A: 70 Ω
B: 10 Ω
C: 20 Ω
D: 50 Ω
Ans: D
94:-The Magnetic field produced in the stater of a three phase induction motor is at
A: Slip speed
B: Synchronous speed
C: Asynchronous speed
D: Rotor speed
Ans: B
95:-The heat proof insulating material used for heater base is
A: Mica
B: Glass wool
C: Cotton
D: Porcelain
Ans: A
96:-A 4 Pole 1200 rpm alternator will generate emf at the frequency of
A: 25 Hz
B: 50 Hz
C: 40 Hz
D: 60 Hz
Ans: C
97:-Conductivity of copper is approximately
A: 90%
B: 98%
C: 89%
D: 85%
Ans: A
98:-Nichrome is an alloy of
A: Nickel and cobalt
B: Nickel and Carbon
C: Nickel and chromium
D: Nickel and copper
Ans: C
99:-The unit of Magneto Motive Force (MMF) is
A: Weber
B: Henry
C: At/Wb
D: Ampere turns
Ans: D
100:-The charging of a cell at high rate is called
A: Trickle charging
B: Boost charging
C: Potential charging
D: Current charging
Ans: B