1. When the molten metal is fed in the cavity of metallic mould by gravity the method of casting is known as
Ans:- Permanent
2. A casting defect which occurs due to improper venting of sand is known as
Ans:- Blowholes
3. Notching is the operation of
Ans:- Removal of metal to the desired shape from an edge of a plate.
4. A neutral flame is obtained by supplying
Ans:-Equal volume of oxygen and acetylene
5. In fore hand welding the angle between the welding rod and the work is kept as
Ans:- 30 degree – 40 degree
6. V- Block is used to
Ans:-Check the trueness of flat surfaces, Locate center of round rods, Check surface roughness.
7. A twist drill is specified by its
Ans:- Shank, material and diameter
8. In shaper, the metal is removed during
Ans:- Forward stroke
9. EDM machining is applied for
Ans:- Shaping carbide dies and punches having a complicated profile, Making a large number of small holes in series and fuel nozzles, Embossing and engraving on harder materials.
10. The work study is done by means of
Ans:- Stopwatch
11. The specific gravity of petrol is about
Ans:- 0.75
12. Tachometer in a vehicle measures
Ans:- Engine r.p.m
13. A hydraulic press is a device used
Ans:- To lift larger load by the application of a comparatively much smaller forces
14. When absorptivity = 1, reflectivity = 0 and transmissivity = 0, then the body is said to be a
Ans:- Black body
15. An under inflated tyre will wear the thread most
Ans:- Near the edge
16. The mechanical efficiency of an impulse turbine is the
Ans:- Ratio of actual work available at the turbine to the energy imparted to the wheel.
17. The efficiency of a reversible machine is
Ans:- More than 50%
18. Streamlining of the Automobile body is done to
Ans:- Minimize air resistance
19. An engine is located in the middle portion in some vehicles mainly to
Ans:- Better utilize the space
20. The rolling resistance is because of the friction between the
Ans:- Tyre and road surface
21. Compression ratio of a petrol engine is nearly
Ans:- 8:1
21. An engine has a clearance volume of 100 cm cube and a swept volume of 800 cm cube. The compression ratio is
Ans:- 9:1
22. The frequency of flashing of light per minute in a direction (side turn) indicator is about
Ans:- 80
23. Thinner is added to paint in order to
Ans:- Optimize its viscosity
24. The brake pedal during ABS operation –
Ans:- Transmits slight kickback to the driver’s foot.
25. The effect of vapour locking on the brake performance is that the
Ans:- Brakes fail completely
26. The main function of the master cylinder is to
Ans:- Convert brake pedal force into hydraulic pressure.
27. The problems caused by the wheel imbalance are
Ans:- Steering wheel vibrations and uneven tyre wear.
28. The basic purpose of providing caster angle on wheels is to
Ans:- Maintain directional stability.
29. When the top of the wheel is tilted outward, then it is called
Ans:- Positive Camber
30. An overinflated tyre will wear the tread most near the
Ans:- Centre
31. The disadvantage of radial ply tyre compared to cross-ply tyre is
Ans:- Uncomfortable ride at low speed.
32. Another name for the steering link rod is
Ans:- Drag link
33. Spring eyes in case of cars are usually lined with
Ans:- Rubber Bushes
34. The coil spring in wishbone suspension is placed between the
Ans:- Lower wishbone and cross member.
35. Two speed reverse gear arrangement is generally provided in case of
Ans:- Tractors
36. The maximum torque multiplication ratio in a torque converter is about
Ans:- 2.5
37. A clutch is usually designed to transmit maximum torque which is
Ans:- 150 percent of the maximum engine torque.
38. The maximum intensity of pressure which clutch facing can withstand without being damaged is about
Ans:- 100 kpa
39. For aiming the headlights, the distance between the headlights and the screen should be
Ans:- 7.6 m
40. The most commonly used car heater is the
Ans;- Hot water tyre
41. A laminated glass when cracking
Ans:- Sandwiched layer traps the fragments.
42. For measuring clearance between two flat surfaces the tool used is the
Ans:- Feeler gauge
43. A square engine is an engine having
Ans:- Bore and stroke equal
44. On the compression stroke, the rings are pressed against
Ans:- Bottom of the groove
45. A dish in the piston head is employed to
Ans:- Control compression ratio
46. The purpose of piston rings is to control
Ans:- Combustion pressures, Cylinder wall lubrication, Oil consumption.
47. The material used for the inlet valve is usually
Ans:- Silico- chrome steel
48. The valves have to be replaced if the metal to be removed for smoothening their end surfaces is more than
Ans:- 0.5 mm
49. For checking the alignment of the crankshaft, the best method is to place it.
Ans:-On its ends
50. Maximum allowable hydrocarbons in the car emission are approximately
Ans:- 100 PPM
51. The position of the PCV valve plunger at idle speed is
Ans:- Towards the valve-outlet side.
52. The material used for cylinder block is
Ans:- Cast iron and aluminum alloy
53. Specific gravity of Diesel is about
Ans:- 0.85
54. The cetane rating of diesel fuel is in the order of
Ans:- 45
55. The function of a governor in automobiles is to
Ans:- Limit the vehicle speed
56. The two rows of cylinders in a ‘V’ type engine are generally arranged at
Ans:- 60 degree
57. The air gap between the central electrode and ground electrode of a spark plug is around
Ans:- 1 mm
58. Which of the following oil is more viscous?
Ans:- SAE 80
59. The purpose of the thermostat is to keep the engine
Ans:- At the desired temperature
60. The fan in the Maruti Car is controlled
Ans:- Electrically
61. The opening pressure of hole type nozzles varies from
Ans:- 17 – 34 m Pa
62. Brake thermal efficiency for S.I. the engine usually varies between
Ans:- 25% and 30%
63. To increase output voltage, battery cells are connected in
Ans:- Series
64. The negative plate of lead-acid battery has
Ans:-Pb
65. Any short-circuits in the armature winding may be tested with a
Ans:-Growler
66. Robotic aircraft used extensively by the military is
Ans:- Drones
67. A rear horizontal stabilizer that that controls up and down or pitching motion of the aircraft nose is called
Ans:- Elevator
68. Characteristic of the aircraft that permits you to maneuver it easily and allows it to withstand the stress resulting from the maneuver is known as
Ans:- Maneuverability
69. The last point on an airfoil that interacts with the airflow around the wing is known as
Ans:- Trailing edge
70. The horizontal line that passes through the center of gravity of the aircraft perpendicular to its flight path is called
Ans:- Lateral axis
71. The study or practice of travel through the air is called
Ans:- Aeronautics
72. The study of forces and the resulting motion of objects through the air is called
Ans:- Aerodynamics
73. An aircraft that is designed to fly without an engine is
Ans:- Glider
74. Which of the following parameters has no effect on the inflow performance of a reservoir?
Ans:-Production tubing diameter
75. Which is not a cause of sand production?
Ans:- Running casing
76. Gas lift works mainly through
Ans:- Lowering bottom – hole pressure
77. Which of the following does not change as a result of a well stimulation operation?
Ans:- Ultimate well recovery
78. Which of the following parameters need not to be considered when designing matrix acidizing treatment?
Ans:- Formation closure stress
79. The ignition quality of petrol is expressed by
Ans:- Octane number
80. The fuels in order of decreasing knock tendency for spark ignition engines are
Ans:- Paraffin, naphthene, aromatic
81. Steam temperature control for the ESD boiler is achieved by
Ans:- Bypassing the superheater.
82. Which of the following fuel oil impurities can cause maximum abrasive damage?
Ans:- Catalytic Fines
83. If an operating auxiliary boiler has a water pH reading of 7, you should
Ans:- Treat the water with caustic soda.
84. Which term refers to a transverse curvature of the deck?
Ans:- Camber
85. The site of Harappa is located on the bank of the river
Ans:- Ravi
Read more: ॥ Part-2 ॥