1000+ Power Plant Engineering Objective Questions and Answers - 2

Question: 6

Cooling towers are designed to

(A) achieve high air flow through tower

(B) break water into fine particles

(C) cause maximum turbulence

(D) expose the maximum transient water surface to the maximum air flow

Question: 7

For water, at pressures below atmospheric

(A) melting point drops slightly and boiling point drops slightly

(B) melting point drops slightly and boiling point drops markedly

(C) melting point rises markedly and boiling point drops markedly

(D) melting point rises slightly and boiling point drops markedly

Question: 8

Which of the following coals hast the highest calorifc value?

(A) peat

(B) lignite

(C) bituminous coal

(D) anthracite coal

Question: 9

Size of boiler tubes is specified by

(A) outside diameter and inside diameter

(B) outside diameter alone

(C) inside diameter and thickness

(D) outside diameter and thickness

Question: 10

Film boiling occurs at

(A) atmospheric pressures

(B) medium pressures

(C) very high pressures

(D) very low pressure