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The wastegate is used to

A) Release the exhaust gas from muffler to tailpipe

B) Allow part of exhaust gas back to inlet manifold for more power

C) Allow part of exhaust gas to pass through compressor

D) Allow part of exhaust gas to by-pass turbine, to prevent detonation

Which engine part is made by centrifugal casting ?
A) Connecting rod B) Crankshaft
C) Cylinder liner D) Cylinder block

Which type of muffler is also known as Helmholtz muffler ?
A) Resonance type muffler

B) Absorber type muffler

C) Baffle type muffler

D) Wave cancellation type muffler

The main advantage of Exhaust Gas Recirculation is
A) Reduced emission of carbon monoxide

B) Reduced emission of carbon dioxide

C) Reduced emission of nitrogen oxide

D) Reduced emission of hydrocarbons

Which part of the jerk type FIP helps to avoid dribbling of fuel ?
A) Helix in the plunger

B) Spill port in the barrel

C) Delivery valve spring

D) Relief plunger on the delivery valve

An engine is warming up very slowly. The reason can be
A) Scale formation in the water jackets

B) Thermostat valve stuck in open position

C) Thermostat valve stuck in closed position

D) Blocked air passages of the radiator

If a short reach spark plug is fitted into the hole for a long reach plug
A) Compression ratio will be reduced

B) Combustion chamber space is reduced

C) Engine will overheat

D) Possibility of preignition will be more