1000+ Heat Engines Objective Questions and Answers Pdf - 1

Question: 1

Absolute pressure is

(A) gauge pressure + atmospheric pressure

(B) gauge pressure - atmospheric pressure

(C) gauge pressure + 1.01235 bar

(D) gauge pressure

Question: 2

Centrifugal blowers can supply

(A) small volumes of air at low pressures

(B) small volume of air at high pressures

(C) large volumes of air at high pressures

(D) large volumes of air at low pressures

Question: 3

In automobiles, as the speed of vehicle increases the back pressure

(A) remains unaffected

(B) depends on other factors

(C) reduces

(D) increases

Question: 4

In a compression ignition engine, higher combustion chamber wall temperature will

(A) reduce exhaust temperature

(B) have no effect

(C) increase knocking tendency

(D) reduce knocking tendency

Question: 5

A turbo charger is used

(A) in rockets for producing air fuel mixture

(B) in jet propulsion units

(C) in gas turbines for compression of air

(D) for superchanging reciprocating engine