Automobile Engineering MCQs Archives

91. The basic purpose of a four wheel drive (4WD) system is that it

delivers improved cornering on dry road surfaces

eliminates the need of snow tyres, tyre chains, etc.

ensures effective transmission of engine torque to all four wheels, even on slippery road surfaces

ensures that effective

✅ The correct answer is option C.

92. The Diesel engine works on

Otto cycle

Carnot cycle

Diesel cycle

Rankine cycle

✅ The correct answer is option C.

93. The basic purpose of tyre rotation on automobiles is to

avoid ply separation

equalize wear

get better ride

none of these

✅ The correct answer is option B.

94. Bead wires are made of

steel

copper

zinc

aluminium

✅ The correct answer is option A.

95. The exhaust gas from petrol engine contains

petrol vapours

water vapours

carbon monoxide

all of these

✅ The correct answer is option D.

96. The rating of C.I. engine fuel (Diesel) is given by

octane number

performance number

cetane number

none of these

✅ The correct answer is option C.

97. The formula for Iso-octane is

C8H18

C7H17

C6H18

C7H18

✅ The correct answer is option A.

98. If the spark plug deposit indicates black coating of soot, it indicates that the engine has been generally operating on

too lean mixture

stoichiometric mixture

most economical mixture

too rich mixture

✅ The correct answer is option D.

99. In bias ply tyres

all plies run parallel to one another

belts of steel mesh are used in the tyres

one ply layer runs diagonally one way and another layer runs diagonally the other way

all of the above

✅ The correct answer is option C.

100. The connecting rod connects the piston and the

cylinder head

cylinder block

camshaft

crankshaft

✅ The correct answer is option D.