Chapter 2 Exam

Question 1

From the deaerator oxygen and other noncondensable gases are separated from the feedwater and directed to the atmosphere ________

By using the closed feedwater heater
Through the economizer
By using steam traps
Through the vent

Answer 1

Through the vent

Question 2

A_______system is a system of measuring instruments and controllers that work together to control a process

Instrumentation
Feedwater
Control
Combustion

Answer 2

Control

Question 3

In a low pressure gas system the_____valve is an electric valve that cannot be opened until the gas pilot is lit

Check
Pressure regulating
Manual reset
Pressure reducing

Answer 3

Manual reset

Question 4

________are used for loads that require dry stem. Such as turbines

Superheaters
Forced draft fans
Reclaimed steam lines
Automatic nonreturn valves

Answer 4

Superheaters

Question 5

Super heater steam has more______than saturated steam at the same pressure

Heat energy
Volume
Pressure
Moisture

Answer 5

Heat energy

Question 6

The deaerator tank is located_____

Above the feedwater pumps
Below the feedwater pumps
After the feedwater heater
Before the feedwater pump

Answer 6

Above the feedwater pump

Question 7

A gas pilot line on a high pressure gas system supplies gas through a ________valve to the pilot gas pressure regulator

Check
Shutoff
Butterfly
Throttling

Answer 7

Shutoff

Question 8

The purpose of any fuel oil system is to supply fuel oil to the burner at the proper______

Temperature and volume
Volume and pressure
Temperature and pressure
Viscosity and speed

Answer 8

Temperature and pressure

Question 9

No______fuel oil needs to be heated before it is pumped so that it can flow

2
3
4
6

Answer 9

6

Question 10

Pulverizing coal allows_____

The coal to be stored easily

For better burning on the grates

For closer contact between the coal and oxygen for completed combustion

For easy hand firing

Answer 10

For closer contact between the coal and oxygen for completed combustion

Question 11

Draft is______caused by a difference in pressure between two points

At the balance of pressure

The flow of air or gases of combustion

A type of back pressure

The stack heigh

Answer 11

The flow of air or gases of combustion

Question 12

Natural draft is the result of temperature difference between_________

Fuel oil and air

Burning coal and sulfur

Air and gases of combustion

Fuel oil and gases of combustion

Answer 12

Fuel oil and gases of combustion

Question 13

In a low pressure gas system the air mixes with the gas in the______

Injector

Gas pilot

Burner register

Pulverizar

Answer 13

Injector

Question 14

A measuring instrument can use a__________to send a signal to a controller

Control valve

Final element

Transmitter

Primary element

Answer 14

Primary element

Question 15

A control system uses a ______to execute a control strategy

Steam pressure gauge

Pressure control station

Feedwater control valve

Control loop

Answer 15

Control loop

Question 16

Water weights approximately______lb/gal

2. 5
3. 6
4. 3
5. 2

Answer 16

8.3

Question 17

Induced draft is produced by pulling air through the boiler furnace with a fan located in the______

Breaching

Inlet dumper

Combustion chamber

Economizer

Answer 17

Breeching

Question 18

A control loop typically uses a_____as the control element

Pressure transmitter

Modulating water valve

Temperature sensor

Steam pressure contoller

Answer 18

Steam pressure contolroller

Question 19

Codes may requiere that a_____ be positioned before the firing rate that controls the volume of gas to the burner

Equalizer

Manual shutoff valve

Flue gas analyzer

Pressure reducing governor

Answer 19

Manual shutoff valve