Diesel cycle is more efficient than Otto cycle
Otto cycle is more efficient than Diesel cycle
both Otto cycle and Diesel cycle are equally efficient
none of the above
✅ The correct answer is option A.
Automobile Engineering MCQs
The most accurate ignition system of a spark ignition engine is
magneto system
battery system
electronic control unit system
magneto and electronic
✅ The correct answer is option C.
The crescent-shaped cavity on the piston head top surface is called as
piston oil hole
snap ring
valve recess
valve clearance
✅ The correct answer is option C.
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.
The connecting rod connects the piston and the
cylinder head
cylinder block
camshaft
crankshaft
✅ The correct answer is option D.
The basic characteristics of a brake fluid is
a high boiling point
low viscosity
compatibility with rubber and metal parts
all of these
✅ The correct answer is option D.
The formula for Iso-octane is
C8H18
C7H17
C6H18
C7H18
✅ The correct answer is option A.
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.
Bead wires are made of
steel
copper
zinc
aluminium
✅ The correct answer is option A.
The exhaust gas from petrol engine contains
petrol vapours
water vapours
carbon monoxide
all of these
✅ The correct answer is option D.