1000+ Heat Engines MCQ Questions and Answers Pdf - 3

Question: 11

Enthalpy of a substance is defined as

(A) sensible heat of water + work done in forcing unit mass of substance into an enclosure at constant pressure at which the substance exists

(B) total heat content of substance above zero degree centigrade

(C) sum of sensible heat + latent heat of substance

(D) the sum of internal energy and the work done in forcing unit mass of substance into an enclosure at the constant pressure at which the substance exists

Question: 12

Crankcase dilution is

(A) dilution of lubricating oil in crankcase

(B) dilution of mixture while passing through crankcase in two stroke engines

(C) dilution of fuel in crank case

(D) addition of water in crankcase

Question: 13

In an engine radiator, heat is transferred by

(A) conduction and convection

(B) conduction

(C) convection

(D) radiation

Question: 14

Boilers using Babasse as fuel use

(A) pulverized fuel burners

(B) travelling grate stroker

(C) underfeed stokers

(D) spreader stokers

Question: 15

In closed cooling system

(A) water does not flow

(B) air and water cooling is simultaneously used

(C) constant fresh water for cooling is supplied

(D) hot water is recirculated after cooling