MECHANICAL ENGINEERING- PAGE 4
Mechanical Engineering MCQs- Page 4
1. Pit furnace can be used for the melting of
A) Cast iron B) Brass
C) Aluminium D) Any one of the above
Ans: D
2. Flux used in cupola furnace while melting cast iron is
A) Lime stone B) Molasses
C) Coke slurry D) Any one of the above
Ans: A
A) Cast iron B) Brass
C) Aluminium D) Any one of the above
Ans: D
2. Flux used in cupola furnace while melting cast iron is
A) Lime stone B) Molasses
C) Coke slurry D) Any one of the above
Ans: A
3. Simplex method is the method used for
A) Value analysis B) Linear programming
C) Network analysis D) Work sampling
Ans: B
4. Work done in free expansion is
A) Zero B) Minimum
C) Maximum D) Negative
Ans: A
5. A cycle consisting of one constant pressure, one constant volume and two is entropic process is known as
A) Carnot cycle B) Stirling cycle
C) Otto cycle D) Diesel cycle
Ans: D
6. The amount of heat required to raise the temperature of unit mass of gas through one degree at constant volume, is called
A) Specific heat at constant volume B) Specific heat at constant pressure
C) Entropy D) Enthalpy
Ans: A
7. A fluid is said to be ideal, if it is
A) Incompressible B) Inviscous
C) Inviscous and incompressible D) Inviscous and compressible
Ans: C
8. The ability of the material to resist softening at high temperature is known as
A) Creep B) Hot hardness
C) Fatigue D) Super hardening
Ans: B
9. Gantt chart is used for
A) Inventory control B) Machine repair schedules
C) Material handling D) Production schedule
Ans: D
10. When acetylene volume is greater than oxygen volume, the flame obtained in gas welding is known as
A) Carburizing flame B) Neutral flame
C) Oxidizing flame D) Inner cone
Ans: A
11. Projection welding is a
A) Continuous spot welding process B) Arc welding process
C) Process used for joining square bars D) Multi-spot welding process
Ans: D
A) Value analysis B) Linear programming
C) Network analysis D) Work sampling
Ans: B
4. Work done in free expansion is
A) Zero B) Minimum
C) Maximum D) Negative
Ans: A
5. A cycle consisting of one constant pressure, one constant volume and two is entropic process is known as
A) Carnot cycle B) Stirling cycle
C) Otto cycle D) Diesel cycle
Ans: D
6. The amount of heat required to raise the temperature of unit mass of gas through one degree at constant volume, is called
A) Specific heat at constant volume B) Specific heat at constant pressure
C) Entropy D) Enthalpy
Ans: A
7. A fluid is said to be ideal, if it is
A) Incompressible B) Inviscous
C) Inviscous and incompressible D) Inviscous and compressible
Ans: C
8. The ability of the material to resist softening at high temperature is known as
A) Creep B) Hot hardness
C) Fatigue D) Super hardening
Ans: B
9. Gantt chart is used for
A) Inventory control B) Machine repair schedules
C) Material handling D) Production schedule
Ans: D
10. When acetylene volume is greater than oxygen volume, the flame obtained in gas welding is known as
A) Carburizing flame B) Neutral flame
C) Oxidizing flame D) Inner cone
Ans: A
11. Projection welding is a
A) Continuous spot welding process B) Arc welding process
C) Process used for joining square bars D) Multi-spot welding process
Ans: D
12. The algebraic difference between the maximum limit and basic size is called
A) Fundamental deviation B) Actual deviation
C) Upper deviation D) Lower deviation
Ans: C
13. The compression ratio for petrol engine is
A) 3 to 6 B) 15 to 20
C) 5 to 8 D) 20 to 30
Ans: C
14. Motion of the cam is transferred to the valves through
A) Rocker arms B) Valve stems
C) Pistons D) Camshaft
Ans: A
15. The volumetric change of the fluid caused by a resistance is known as
A) Adhesion B) Cohesion
C) Volumetric index D) Compressibility
Ans: D
16. The compression ratio of an IC engine is the ratio of
A) Total cylinder volume to swept volume
B) Swept volume to clearance volume
C) Total cylinder volume to clearance volume
D) Pressure after compression to that of before compression
Ans: A
17. Malleability of a material can be defined as
A) Ability to recover its original form
B) Ability to undergo large permanent deformation in compression
C) Ability to undergo large permanent deformation in tension
D) None of the above
Ans: B
18. The slow plastic deformation of metals under a constant stress in known as
A) Creep B) Endurance
C) Plastic deformation D) Fatigue
Ans: A
A) Fundamental deviation B) Actual deviation
C) Upper deviation D) Lower deviation
Ans: C
13. The compression ratio for petrol engine is
A) 3 to 6 B) 15 to 20
C) 5 to 8 D) 20 to 30
Ans: C
14. Motion of the cam is transferred to the valves through
A) Rocker arms B) Valve stems
C) Pistons D) Camshaft
Ans: A
15. The volumetric change of the fluid caused by a resistance is known as
A) Adhesion B) Cohesion
C) Volumetric index D) Compressibility
Ans: D
16. The compression ratio of an IC engine is the ratio of
A) Total cylinder volume to swept volume
B) Swept volume to clearance volume
C) Total cylinder volume to clearance volume
D) Pressure after compression to that of before compression
Ans: A
17. Malleability of a material can be defined as
A) Ability to recover its original form
B) Ability to undergo large permanent deformation in compression
C) Ability to undergo large permanent deformation in tension
D) None of the above
Ans: B
18. The slow plastic deformation of metals under a constant stress in known as
A) Creep B) Endurance
C) Plastic deformation D) Fatigue
Ans: A
19. Which of the following wage incentive plan guarantees minimum wage to worker and bonus is paid for fixed percentage of time saved ?
A) Gantt B) Rowan plan
C) Halsey plan D) Emerson’s efficiency plan
Ans: C
20. Mercury does not wet glass. This is due to property of liquid known as
A) Adhesion B) Cohesion
C) Surface tension D) Viscosity
Ans: B
21. The processes occurring in open system which permit the transfer of mass to and from the system, are known as
A) Non-flow processes
B) Flow processes
C) Adiabatic processes
D) None of these
Ans: B
22. The aim of value engineering is to
A) Minimise the cost without change in quality of the product
B) To determine the selling price of a product
C) To find the depreciation value of a machine
D) All of the above
Ans: A
23. Mild steel belongs to the following category.
A) Medium carbon steel B) High carbon steel
C) Alloy steel D) Low carbon steel
Ans: D
24. The operation of producing cup shaped parts from flat sheet metal blanks by bending and Plastic flow of metal, is known as
A) Squeezing B) Coining
C) Drawing D) Planishing
Ans: C
25. Segmental chips are formed during machining
A) Mild steel B) High speed steel
C) High carbon steel D) Cast iron
Ans: D
26. Density of water is maximum at
A) 0°C B) 0°K
C) 20°C D) 4°C
Ans: D
A) Gantt B) Rowan plan
C) Halsey plan D) Emerson’s efficiency plan
Ans: C
20. Mercury does not wet glass. This is due to property of liquid known as
A) Adhesion B) Cohesion
C) Surface tension D) Viscosity
Ans: B
21. The processes occurring in open system which permit the transfer of mass to and from the system, are known as
A) Non-flow processes
B) Flow processes
C) Adiabatic processes
D) None of these
Ans: B
22. The aim of value engineering is to
A) Minimise the cost without change in quality of the product
B) To determine the selling price of a product
C) To find the depreciation value of a machine
D) All of the above
Ans: A
23. Mild steel belongs to the following category.
A) Medium carbon steel B) High carbon steel
C) Alloy steel D) Low carbon steel
Ans: D
24. The operation of producing cup shaped parts from flat sheet metal blanks by bending and Plastic flow of metal, is known as
A) Squeezing B) Coining
C) Drawing D) Planishing
Ans: C
25. Segmental chips are formed during machining
A) Mild steel B) High speed steel
C) High carbon steel D) Cast iron
Ans: D
26. Density of water is maximum at
A) 0°C B) 0°K
C) 20°C D) 4°C
Ans: D
27. Which of the following is dimension less ?
A) Specific gravity B) Specific weight
C) Specific volume D) Specific speed
Ans: A
28. Job evaluation is the method of determining the
A) Value of overall production B) Worker’s performance on job
C) Relative values of a job D) Worth of the machine
Ans: C
29. The information provided by the oxygen sensor to the feedback control system is about the
A) Air temperature B) Air-fuel ratio
C) Air flow speed D) Exhaust gas volume
Ans: B
30. The torque available at the contact between driving wheels and road is known as
A) Tractive effort B) Clutch effort
C) Brake effort D) None of these
Ans: A
31. Isotropic materials are those which have the same elastic properties
A) Stress induced in all directions
B) Thermal properties in all directions
C) Density throughout
D) Elastic properties in all directions
Ans: D
32. The bulk modulus of elasticity with increase in pressure
A) Decreases B) Increases
C) Remains constant D) Unpredictable
Ans: B
33. Which of the following cycles uses air as the refrigerant ?
A) Ericsson B) Bell Coleman
C) Stirling D) Carnot
Ans: B
34. One ton of refrigeration corresponds to
A) 80 kcal/min B) 50 kcal/min
C) 80 kcal/hr D) 1000 kcal/day
Ans: B
35. The moisture in a refrigerant is removed by
A) Evaporator B) Safety relief valve
C) Dehumidifier D) Driers
Ans: D
A) Specific gravity B) Specific weight
C) Specific volume D) Specific speed
Ans: A
28. Job evaluation is the method of determining the
A) Value of overall production B) Worker’s performance on job
C) Relative values of a job D) Worth of the machine
Ans: C
29. The information provided by the oxygen sensor to the feedback control system is about the
A) Air temperature B) Air-fuel ratio
C) Air flow speed D) Exhaust gas volume
Ans: B
30. The torque available at the contact between driving wheels and road is known as
A) Tractive effort B) Clutch effort
C) Brake effort D) None of these
Ans: A
31. Isotropic materials are those which have the same elastic properties
A) Stress induced in all directions
B) Thermal properties in all directions
C) Density throughout
D) Elastic properties in all directions
Ans: D
32. The bulk modulus of elasticity with increase in pressure
A) Decreases B) Increases
C) Remains constant D) Unpredictable
Ans: B
33. Which of the following cycles uses air as the refrigerant ?
A) Ericsson B) Bell Coleman
C) Stirling D) Carnot
Ans: B
34. One ton of refrigeration corresponds to
A) 80 kcal/min B) 50 kcal/min
C) 80 kcal/hr D) 1000 kcal/day
Ans: B
35. The moisture in a refrigerant is removed by
A) Evaporator B) Safety relief valve
C) Dehumidifier D) Driers
Ans: D
36. Delta iron occurs at a temperature of
A) Between 910°C and 1400°C
B) Between 1400°C and 1539°C
C) Above the melting point
D) None of the above
Ans: B
37. Super conduction by metals is observed in the temperature range of
A) Above 1000°C B) Above 100°K
C) Above 100°C D) Below 100K
Ans: D
38. Which of the following constituents of steel is softest and least strong ?
A) Austenite B) Ferrite
C) Pearlite D) Bainite
Ans: B
39. Ammonia – absorption refrigeration cycle requires
A) Very little work input
B) Zero work input
C) Maximum work input
D) Nearly same work input as for vapour compression cycle
Ans: A
40. The main object of scientific layout is
A) To minimize production delays
B) To produce better quality products
C) To utilize maximum floor area
D) All of the above
Ans: D
41. The diagram which shows the correct crank positions corresponding to the opening and closing of the valves, is known as
A) P-V diagram B) Valve timing diagram
C) Indicator diagram D) Axial force diagram
Ans: B
A) Between 910°C and 1400°C
B) Between 1400°C and 1539°C
C) Above the melting point
D) None of the above
Ans: B
37. Super conduction by metals is observed in the temperature range of
A) Above 1000°C B) Above 100°K
C) Above 100°C D) Below 100K
Ans: D
38. Which of the following constituents of steel is softest and least strong ?
A) Austenite B) Ferrite
C) Pearlite D) Bainite
Ans: B
39. Ammonia – absorption refrigeration cycle requires
A) Very little work input
B) Zero work input
C) Maximum work input
D) Nearly same work input as for vapour compression cycle
Ans: A
40. The main object of scientific layout is
A) To minimize production delays
B) To produce better quality products
C) To utilize maximum floor area
D) All of the above
Ans: D
41. The diagram which shows the correct crank positions corresponding to the opening and closing of the valves, is known as
A) P-V diagram B) Valve timing diagram
C) Indicator diagram D) Axial force diagram
Ans: B
42. The operation of removing the trapped air from the hydraulic brake system is known as
A) Trapping B) Cleaning
C) Bleeding D) Tapping
Ans: C
43. A Traction Control System (TCS) in automobiles controls
A) Vibration on the steering wheel
B) The torque that is transmitted by the tyres to the road surface
C) Engine power during acceleration
D) Stopping distance in case of emergency
Ans: B
44. Expediting function consists in keeping watch on
A) Flow of material and in case of trouble locate source of trouble
B) Minimizing the delays
C) Operators activity
D) None of the above
Ans: A
45. Percent idle time for men and machines is found by
A) Time study B) Method study
C) Work sampling D) Work study
Ans: C
46. In micro motion study, therblig is described by
A) Micro motions
B) An event
C) An activity
D) Standard symbol and colour
Ans: D
47. Scavenging air in diesel engine means
A) Air used for combustion sent under pressure
B) Air used for forcing burned gases out of engine’s cylinder during the exhaust period
C) Burned air containing products of combustion
D) Air fuel mixture
Ans: B
48. The ratio of indicated thermal efficiency to the corresponding air standard cycle efficiency is called
A) Net efficiency B) Relative efficiency
C) Overall efficiency D) Efficiency ratio
Ans: B
A) Trapping B) Cleaning
C) Bleeding D) Tapping
Ans: C
43. A Traction Control System (TCS) in automobiles controls
A) Vibration on the steering wheel
B) The torque that is transmitted by the tyres to the road surface
C) Engine power during acceleration
D) Stopping distance in case of emergency
Ans: B
44. Expediting function consists in keeping watch on
A) Flow of material and in case of trouble locate source of trouble
B) Minimizing the delays
C) Operators activity
D) None of the above
Ans: A
45. Percent idle time for men and machines is found by
A) Time study B) Method study
C) Work sampling D) Work study
Ans: C
46. In micro motion study, therblig is described by
A) Micro motions
B) An event
C) An activity
D) Standard symbol and colour
Ans: D
47. Scavenging air in diesel engine means
A) Air used for combustion sent under pressure
B) Air used for forcing burned gases out of engine’s cylinder during the exhaust period
C) Burned air containing products of combustion
D) Air fuel mixture
Ans: B
48. The ratio of indicated thermal efficiency to the corresponding air standard cycle efficiency is called
A) Net efficiency B) Relative efficiency
C) Overall efficiency D) Efficiency ratio
Ans: B
49. The air standard efficiency of an Otto cycle compared to diesel cycle for the given compression ratio is
A) More B) Same
C) Less D) Unpredictable
Ans: A
50. If the intake air temperature of IC engine increases, its efficiency will
A) Unpredictable B) Remains same
C) Depend on other factors D) Decrease
Ans: D
51. Micro motion study involves following number of fundamental hand motions.
A) 8 numbers B) 16 numbers
C) 24 numbers D) 20 numbers
Ans: B
52. If the radius of the wire stretched by a load is doubled, then its Young’s modulus will be
A) Doubled B) Halved
C) Remain unaffected D) Become four times
Ans: C
53. Hooke’s law states that stress is directly proportional to strain up to
A) Limit of proportionality B) Yield point
C) Elastic limit D) Breaking point
Ans: C
54. The unit of Young’s modulus is
A) kg/cm B) N-m
C) kg-m D) kg/cm2
Ans: D
55. The property of the material which enables it to resist fracture due to high impact load is known as
A) Toughness B) Resilience
C) Strength D) Endurance
Ans: A
56. Electri furnaces usually operate up to a temperature of
A) 1000°C B) 2200°C
C) 1700°C D) 5000°C
Ans: C
A) More B) Same
C) Less D) Unpredictable
Ans: A
50. If the intake air temperature of IC engine increases, its efficiency will
A) Unpredictable B) Remains same
C) Depend on other factors D) Decrease
Ans: D
51. Micro motion study involves following number of fundamental hand motions.
A) 8 numbers B) 16 numbers
C) 24 numbers D) 20 numbers
Ans: B
52. If the radius of the wire stretched by a load is doubled, then its Young’s modulus will be
A) Doubled B) Halved
C) Remain unaffected D) Become four times
Ans: C
53. Hooke’s law states that stress is directly proportional to strain up to
A) Limit of proportionality B) Yield point
C) Elastic limit D) Breaking point
Ans: C
54. The unit of Young’s modulus is
A) kg/cm B) N-m
C) kg-m D) kg/cm2
Ans: D
55. The property of the material which enables it to resist fracture due to high impact load is known as
A) Toughness B) Resilience
C) Strength D) Endurance
Ans: A
56. Electri furnaces usually operate up to a temperature of
A) 1000°C B) 2200°C
C) 1700°C D) 5000°C
Ans: C
57. __________ is the heaviest of common metals.
(A) Tin (B) Aluminum (C) Copper (D) Lead
Ans: D
58. The alloy of __________ with __________ is called nichrome.
(A) Nickel, Chromium (B) Tungsten, iron
(C) Copper, Aluminum (D) Cobalt, copper
Ans: A
59. The alloy of copper and tin is called :
(A) Brass (B) Gun metal (C) Babbitt metal (D) Bronze
Ans: D
60. Bell metal contains __________% tin and rest copper.
(A) 30 (B) 20 (C) 25 (D) 35
Ans: B
61. Alloy steels are usually quenched in __________.
(A) Oil (B) Water (C) Lime (D) Ash
Ans: A
62. In normalizing, cooling is done in :
(A) Lime (B) Air (C) Ash (D) Water
Ans: B
63. Tap drill size is determined by the formulae :
(A) Outside diameter − Inside diameter
(B) Outside diameter − 2 depth
(C) Outside diameter − Pitch
(D) None of these
Ans: B
64. An oxidizing flame is one in which there is an excess of __________.
(A) Hydrogen (B) Oxygen (C) Nitrogen (D) Carbon dioxide
Ans: B
65. By oxyacetylene welding method the metal plates upto __________ mm thickness can be welded.
(A) 30 mm (B) 25 mm (C) 40 mm (D) 50 mm
Ans: D
66. The ore of lead is __________.
(A) Galena (B) Copper pyrites (C) Bauxite (D) Calamine
Ans: A
67. Gun metal contains __________% tin, __________% Cu and 2% Zinc.
(A) 12 and 90 (B) 10 and 88 (C) 8 and 80 (D) 11 and 90
Ans: B
68. Usually acetylene cylinder hoses are __________ in colour.
(A) Black (B) Maroon (C) Blue (D) Yellow
Ans: B
69. Galvanized iron means coating of __________ on iron.
(A) Tin (B) Nickel (C) Zinc (D) Lead
Ans: C
70. Cast iron alloyed with 10% nickel and __________ become non-magnetic called no-mag.
(A) 2% Cobalt (B) 3% Aluminum (C) 6% Chromium (D) 6% Manganese
Ans: D
(A) Tin (B) Aluminum (C) Copper (D) Lead
Ans: D
58. The alloy of __________ with __________ is called nichrome.
(A) Nickel, Chromium (B) Tungsten, iron
(C) Copper, Aluminum (D) Cobalt, copper
Ans: A
59. The alloy of copper and tin is called :
(A) Brass (B) Gun metal (C) Babbitt metal (D) Bronze
Ans: D
60. Bell metal contains __________% tin and rest copper.
(A) 30 (B) 20 (C) 25 (D) 35
Ans: B
61. Alloy steels are usually quenched in __________.
(A) Oil (B) Water (C) Lime (D) Ash
Ans: A
62. In normalizing, cooling is done in :
(A) Lime (B) Air (C) Ash (D) Water
Ans: B
63. Tap drill size is determined by the formulae :
(A) Outside diameter − Inside diameter
(B) Outside diameter − 2 depth
(C) Outside diameter − Pitch
(D) None of these
Ans: B
64. An oxidizing flame is one in which there is an excess of __________.
(A) Hydrogen (B) Oxygen (C) Nitrogen (D) Carbon dioxide
Ans: B
65. By oxyacetylene welding method the metal plates upto __________ mm thickness can be welded.
(A) 30 mm (B) 25 mm (C) 40 mm (D) 50 mm
Ans: D
66. The ore of lead is __________.
(A) Galena (B) Copper pyrites (C) Bauxite (D) Calamine
Ans: A
67. Gun metal contains __________% tin, __________% Cu and 2% Zinc.
(A) 12 and 90 (B) 10 and 88 (C) 8 and 80 (D) 11 and 90
Ans: B
68. Usually acetylene cylinder hoses are __________ in colour.
(A) Black (B) Maroon (C) Blue (D) Yellow
Ans: B
69. Galvanized iron means coating of __________ on iron.
(A) Tin (B) Nickel (C) Zinc (D) Lead
Ans: C
70. Cast iron alloyed with 10% nickel and __________ become non-magnetic called no-mag.
(A) 2% Cobalt (B) 3% Aluminum (C) 6% Chromium (D) 6% Manganese
Ans: D
71. Circles and arcs beyond the limit of dividers :
(A) Trammel points (B) Rope and nail
(C) Spring dividers (D) Ordinary dividers
Ans: A
72. The ingredients of solders are :
(A) Lead and copper (B) Lead and tin
(C) Tin and copper (D) Zinc and lead
Ans: B
73. In soldering the flux used is :
(A) Salamonia (B) Borax
(C) Copper sulphate (D) All of the above
Ans: A
74. Tolerance is the difference between maximum limit of size and __________ size.
(A) Minimum limit (B) Basic
(C) Upper deviation (D) Lower deviation
Ans: A
75. The measured size is known as __________.
(A) Nominal size (B) Basic size (C) Actual size (D) Minimum limit
Ans: C
76. The algebraic difference between actual size (maximum etc.) and the corresponding basic size is called __________.
(A) Tolerance (B) Basic size (C) Nominal size (D) Deviation
Ans: D
77. In a push fit one can be assembled into the other with :
(A) A medium pressure (B) Light hand pressure
(C) No pressure (D) All of the above
Ans: B
78. The fundamental deviation symbol ‘H’ represents :
(A) Hole (B) Shaft
(C) Both (A) and (B) (D) None of these
Ans: A
79. In grey cast iron carbon contained in the form of __________.
(A) Spheroidal (B) Nodules (C) Iron carbide (D) Graphite flakes
Ans: D
80. The flux used in cupola furnace is :
(A) Charcoal (B) Lime stone (C) Coke (D) Borax
Ans: B
(A) Trammel points (B) Rope and nail
(C) Spring dividers (D) Ordinary dividers
Ans: A
72. The ingredients of solders are :
(A) Lead and copper (B) Lead and tin
(C) Tin and copper (D) Zinc and lead
Ans: B
73. In soldering the flux used is :
(A) Salamonia (B) Borax
(C) Copper sulphate (D) All of the above
Ans: A
74. Tolerance is the difference between maximum limit of size and __________ size.
(A) Minimum limit (B) Basic
(C) Upper deviation (D) Lower deviation
Ans: A
75. The measured size is known as __________.
(A) Nominal size (B) Basic size (C) Actual size (D) Minimum limit
Ans: C
76. The algebraic difference between actual size (maximum etc.) and the corresponding basic size is called __________.
(A) Tolerance (B) Basic size (C) Nominal size (D) Deviation
Ans: D
77. In a push fit one can be assembled into the other with :
(A) A medium pressure (B) Light hand pressure
(C) No pressure (D) All of the above
Ans: B
78. The fundamental deviation symbol ‘H’ represents :
(A) Hole (B) Shaft
(C) Both (A) and (B) (D) None of these
Ans: A
79. In grey cast iron carbon contained in the form of __________.
(A) Spheroidal (B) Nodules (C) Iron carbide (D) Graphite flakes
Ans: D
80. The flux used in cupola furnace is :
(A) Charcoal (B) Lime stone (C) Coke (D) Borax
Ans: B
81. In gun breeches which thread is used ?
(A) Butters threads (B) Acme thread (C) Square thread (D) Worm thread
Ans: A
82. The product of blast furnace is :
(A) Cast iron (B) Gray iron (C) Pig iron (D) Alloy steel
Ans: C
83. The rotary motion in a power backsaw machine is converted into linear motion by :
(A) Chain drive (B) Gear drive
(C) Crank mechanism (D) Slotted lever mechanism
Ans: C
84. While machine reaming the work is revolved at __________.
(A) High speed (B) Very slow speed
(C) Medium speed (D) None of these
Ans: B
85. __________ caliper has a turn leg.
(A) Inside (B) Outside
(C) Jennifer Caliper (D) None of these
Ans: C
86. The process of reduction of iron ore to pig iron is called :
(A) Cyaniding (B) Hardening (C) Forging (D) Smelting
Ans: D
87. Which gauge is used during the use of sine bar ?
(A) Roller gauge (B) Ring gauge (C) Screw gauge (D) Slip gauge
Ans: D
88. The part of vernier bevel protractor on which main scale marked is called ?
(A) Dial (B) Disc (C) Scale (D) Vernier
Ans: B
89. In a wheel the deference between abrasive and bond is known as :
(A) Grid (B) Structure (C) Grit (D) Bond
Ans: B
90. What is mean by ‘V’ in WA46K4V16 written on grinder ?
(A) Structure (B) Type of abrasive
(C) Type of bond (D) Grid
Ans: C
91. Steel is an alloy of __________ and __________.
(A) Copper and iron (B) Iron and carbon
(C) Carbon and tin (D) Manganese and sulphur
Ans: B
(A) Butters threads (B) Acme thread (C) Square thread (D) Worm thread
Ans: A
82. The product of blast furnace is :
(A) Cast iron (B) Gray iron (C) Pig iron (D) Alloy steel
Ans: C
83. The rotary motion in a power backsaw machine is converted into linear motion by :
(A) Chain drive (B) Gear drive
(C) Crank mechanism (D) Slotted lever mechanism
Ans: C
84. While machine reaming the work is revolved at __________.
(A) High speed (B) Very slow speed
(C) Medium speed (D) None of these
Ans: B
85. __________ caliper has a turn leg.
(A) Inside (B) Outside
(C) Jennifer Caliper (D) None of these
Ans: C
86. The process of reduction of iron ore to pig iron is called :
(A) Cyaniding (B) Hardening (C) Forging (D) Smelting
Ans: D
87. Which gauge is used during the use of sine bar ?
(A) Roller gauge (B) Ring gauge (C) Screw gauge (D) Slip gauge
Ans: D
88. The part of vernier bevel protractor on which main scale marked is called ?
(A) Dial (B) Disc (C) Scale (D) Vernier
Ans: B
89. In a wheel the deference between abrasive and bond is known as :
(A) Grid (B) Structure (C) Grit (D) Bond
Ans: B
90. What is mean by ‘V’ in WA46K4V16 written on grinder ?
(A) Structure (B) Type of abrasive
(C) Type of bond (D) Grid
Ans: C
91. Steel is an alloy of __________ and __________.
(A) Copper and iron (B) Iron and carbon
(C) Carbon and tin (D) Manganese and sulphur
Ans: B
92. Some ___________ is given while making edges and seams.
(A) Cutting (B) Folding (C) Measuring (D) Allowance
Ans: D
93. In a bend prepared by folding machine the radius of internal angle is __________ times of thickness of metal.
(A) 2 (B) 3.5 (C) 1.5 (D) 2.5
Ans: C
94. The purest form of Iron is :
(A) Cast iron (B) Pig iron (C) Mild steel (D) Wrought iron
Ans: D
95. Grade of silicon carbide is :
(A) Soft (B) Hard
(C) (A) and (B) (D) Very hard and brittle
Ans: D
96. Conical clutch is a :
(A) Dog clutch (B) Match plate clutch
(C) Friction clutch (D) All of the above
Ans: C
97. ‘V’ belts are classified in __________ classes.
(A) 6 (B) 3 (C) 4 (D) 5
Ans: D
98. In __________ method, the lubricant given to machine by drops.
(A) Splash (B) Gravity feed
(C) Force pressure (D) Ring oiling
Ans: B
99. Lard oil is a __________ lubricant.
(A) Liquid (B) Solid (C) Semi solid (D) All of the above
Ans: A
100. ‘II’ this symbol indicates which type of weld ?
(A) Seam weld (B) Spot weld (C) Fillet weld (D) Square butt weld
Ans: D
(A) Cutting (B) Folding (C) Measuring (D) Allowance
Ans: D
93. In a bend prepared by folding machine the radius of internal angle is __________ times of thickness of metal.
(A) 2 (B) 3.5 (C) 1.5 (D) 2.5
Ans: C
94. The purest form of Iron is :
(A) Cast iron (B) Pig iron (C) Mild steel (D) Wrought iron
Ans: D
95. Grade of silicon carbide is :
(A) Soft (B) Hard
(C) (A) and (B) (D) Very hard and brittle
Ans: D
96. Conical clutch is a :
(A) Dog clutch (B) Match plate clutch
(C) Friction clutch (D) All of the above
Ans: C
97. ‘V’ belts are classified in __________ classes.
(A) 6 (B) 3 (C) 4 (D) 5
Ans: D
98. In __________ method, the lubricant given to machine by drops.
(A) Splash (B) Gravity feed
(C) Force pressure (D) Ring oiling
Ans: B
99. Lard oil is a __________ lubricant.
(A) Liquid (B) Solid (C) Semi solid (D) All of the above
Ans: A
100. ‘II’ this symbol indicates which type of weld ?
(A) Seam weld (B) Spot weld (C) Fillet weld (D) Square butt weld
Ans: D
· UPSC Exam Syllabus- Mechanical Engineering
· Mechanical Engineering
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· Mechanical Engineering
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