Chapter 1 Exam

Question 1

A low pressure boiler operates at a pressure of not more than _____psi

15
35
50
75

Answer 1

15 psi

Question 2

The higher the steam pressure the higher the_______of the water in the boiler

Impurities
Boiling point
Volume
Atmospheric pressure

Answer 2

Boiling point

Question 3

_________is the amount of energy equal to the evaporation of 34.5 lb of water/hr from and at a feedwater temperature of 212F

Factor of evaporation
Boiler horsepower
Latent heat of fusion
Evaporation energy

Answer 3

Boiler horsepower

Question 4

When a steam boiler is operating at 100 pounds per square inch gauge pressure the temperature of the water and steam will be approximately _____F

115
225
338
550

Answer 4

338

Question 5

A HRT boiler is a ____ boiler

Watertube
Firetube
Scotch marine
Condensing

Answer 5

Firetube

Question 6

As steam pressure in a boiler increases there is a corresponding increase in the ______

Superheat
Volume of steam
Boiler horsepower
Temperature

Answer 6

Temperature

Question 7

In a firetube boiler the heat produced by gases of combustion_____

Passes through her tubes

Surround the tubes

Bypass the combustion chamber

Answer 7

Passes through the tubes

Question 8

Water tubes boiler were designed to operate at a pressure as high as_____psi, a point known as the critical pressure of steam

512
1015
3206
5000

Answer 8

3206 Psi

Question 9

A mud drum, if used, is the lowest part of the water side of a______boiler

HRT
Watertube
Firetube
Electric

Answer 9

Watertube

Question 10

A_______boiler is watertube boiler in which replaceable serpentine tubes are connected to the upper and lower drums and surround the firebox

Straight tube
Bent tube
Membrane
Flex tube

Answer 10

Flex-tube

Question 11

In electrode electric boilers, heat is generated by electric current flowing from one electrode to another electrode through the______

Metal plates
Stainless steel tubes
Coiled conductor
Boiler water

Answer 11

Boiler eater

Question 12

A condensing economizer recovers______btu/lb from the heat in water vapor

32
212
970
1150

Answer 12

1150

Question 13

A_______does not require a burner because it uses hot waste heat gases from another process

Water boiler
Electric boiler
Heat recovery steam generator
Scotch marine boiler

Answer 13

Heat recovery steam generator

Question 14

In a watertube boiler, the heated ester inside the tubes become_____ causing it to rise

Less dense
More dense
Less viscous
More viscous

Answer 14

Less dense

Question 15

Cogeneration produces______and then uses the waste heat in a process or for heating

Hot air
Hot water
Electricity
Gas

Answer 15

Electricity

Question 16

A______is a device that converts mechanical energy into electricity energy by means of electromagnetic induction

Generator
Transfer switch
Transformer
Turbine

Answer 16

Generator

Question 17

A_____uses municipal solid waste that would normally go to la landfills

Electric boiler
Coal boiler
Refuse boiler
Heat recovery steam generator

Answer 17

Refuse boiler

Question 18

_________efficiency is the ratio of the heat absorbed by a boiler output to the heat available in the fuel input

Combustion
Watertube
Thermal
Overall plant

Answer 18

Thermal

Question 19

Baffles are used to direct gases so that they come in close contact with the______

Feedwater
Combustion chamber
Superheater
Boiler heating surface

Answer 19

Boiler heating surface

Question 20

_________stress occur when two forces of equal intensity act parallel to each other but in opposite directions

Compressive
Sheer
Tensile
Cutting

Answer 20

Shear

Question 21

Some watertube boiler are equipped with______to increase the heating surface and the life of the furnace refractory

Brickwork
Baffles
Waterwalls
Stays

Answer 21

Waterwalls