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Automobile Engineering Quiz | Automobile Engineering Short Questions & Answers

Questions
41 On modern four stroke engines the inlet valve opens just
A Before TDC
B After TDC
C Before BDC
D After BDC

Answer: Before TDC
42 On modern four stroke engines the exhaust valve opens just
A Before TDC
B After TDC
C Before BDC
D After BDC

Answer: Before BDC
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43 The purpose of valve clearance is to
A Allow the valve to expand
B Allow the sliding of valve in the guide
C Ensure that the valve closes fully
D Ensure that the crankshaft is free to rotate

Answer: Ensure that the valve closes fully
44 The size of the engine intake valve is
A Same as that of exhaust valve
B Smaller than that of exhaust valve
C Larger than that of exhaust valve
D Does not depend upon the size of exhaust valve

Answer: Smaller than that of exhaust valve
45 Exhaust valve temperature is about
A 35 degree celsius
B 100 degree celsius
C 150 degree celsius
D 500 degree celsius

Answer: 500 degree celsius
46 The valve is opened as the cam lobe on the cam raises the
A Bearing
B Piston
C Valve lifter
D Valve seat

Answer: Valve lifter
47 In a diesel engine the fuel injection pressure is in the range
A 100 to 170 atm
B 60 to 70 atm
C 30 to 40 atm
D 20 to 25 atm

Answer: 100 to 170 atm
48 In a four stroke engine each cylinder has
A One valve
B Two valves
C Three valves
D Four valves

Answer: Two valves
49 Two stoke engine is preferred for small vehicles because
A Fuel consumption is low
B Shock and vibrations are less
C Its size is small
D It is easy to control

Answer: Its size is small
50 A negative loop in the P.V diagram of an I.C engine is due to
A Pre ignition in the engine
B Suction of air for engine
C Pre opening of the exhaust valve
D High pressure in the cylinder

Answer: Suction of air for engine
51 The size of intake valve is
A Smaller than that of the exhaust valve
B Equal to that of the exhaust valve
C Larger than that of the exhaust valve
D Not depending upon the size of exhaust valve

Answer: Smaller than that of exhaust valve
52 During combustion the pressure in the cylinder may increase to as much as
A 50 Kg/cm2
B 400 Kg/cm2
C 10 Kg/cm2
D None

Answer: 50 Kg/cm2
53 The wheel base of the vehicle is:
A Distance between centers of both front wheels
B Distance between centers of both rear wheels
C Distance between centers of the front and rear wheels
D Distance between centers of right front and rear left wheels

Answer: Distance between centers of the front and rear wheels
54 The device used to maintain zero valve clearance in an internal combustion engine:
A Hydraulic tappet
B Hydraulic valve lifter
C Hydraulic lash adjuster
D All of these

Answer: All of these
55 A thin strip of metal used for measuring clearences between two parts:
A Screw gauge
B Feeler gauge
C Voltmeter
D Vernier scale

Answer: Feeler gauge
56 GVM stands for:
A Gross vehicle mass
B Motor’s gross velocity
C Greatest velocity mode
D All of the above

Answer: Gross vehicle mass
57 Ignition coil’s secondary terminal connects to:
A Voltmeter
B Ammeter
C Potentiometer
D Spark plug

Answer: Spark plug
58 The Ackermann steering layout
A Makes for safer driving
B Enables the driver to feel ahead position
C Gives minimum tyre wear
D Reduces load on the kingpins and stub axle

Answer: Makes for safer driving
59 Caster is defined as the inclination of
A Front wheel to the vertical
B The king pin axis in the fore and aft plane
C The king pin axis in the transverse vertical plane
D The axis of stub axle to the horizontal

Answer: The king pin axis in the fore and aft plane
60 The distance between dual tyres of vehicles is to be correctly spaced to
A Ensure proper distribution of load between dual wheels
B Reduce over-steering effect
C Reduce the slippage between tyre and road while taking a turn
D Ensure effective braking

Answer: Reduce the slippage between tyre and road while taking a turn

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