Introduction to Automobile Engineering

The power actually developed inside the engine cylinder is called as

• Indicated power

• Brake power

• Frictional power

• None of these

If the air-fuel mixture in a spark ignition engine is too rich, then air-fuel ratio is about

• 17:1

• 15:1

• 13:1

• 10:1

The battery is an electrochemical device, which means battery

• Makes chemicals by mechanical means

• Uses chemical action to provide electricity

• Has curved plates instead of flat plates

• does not use an electrolyte

Two advantages of using helical gears rather than spur gears in a transmission system are

• Strength and cost

• Strength and less end thrust

• Noise level and strength

• Noise level and economy

The correct flow of power through the drive train is

• Engine drive shafts, clutch, main shaft, counter shaft, final driven gear, wheels

• Engine clutch, main shaft, counter shaft, final driven gear, drive shafts, wheels

• Engine clutch, counter shaft, main shaft, final driven gear, drive shafts, wheels

• Engine main shaft, counter shaft, clutch, final driven gear, drive shafts, wheels

In a Diesel engine, the function of a fuel injector is to

• Mix the fuel and air

• Ignite the air-fuel mixture

•  Provide flame front for ignition

• Spray atomized fuel in the cylinder

In a four speed four stroke Diesel engine, the intake valve

• Opens at T.D.C. and closes at B.D.C.

• Opens at 20° before T.D.C. and closes at 35° after B.D.C.

• Opens at 10° after T.D.C. and closes at 20° before B.D.C.

• None of the above

The cam shaft in an engine is always mounted

• Parallel to the crankshaft

• Perpendicular to the crankshaft

• Inclined to the crankshaft

• None of these

The basic function of the suspension is to

• Absorbs vibration and impact forces from the road surface

• Ensure that the steering wheel can deliver a suitable amount of steering force

• Ensure that wheel alignment is not disturbed during driving

• Automatically correct the effects of over steering

The sequence order of events in a four stroke engine is

• Suction exhaust power compression

• Suction power compression exhaust

• Suction compression power exhaust

• Exhaust compression power suction