Test 4 Multiple Choice Flashcards Preview

ADVANCED ENGINEER TRAINING I (Third-Class Upgrade) > Test 4 Multiple Choice > Flashcards

Flashcards in Test 4 Multiple Choice Deck (15)
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1
Q

As steam pressure in boiler increases there is a corresponding increase in the_____

Temperature

Superheat

Volume of steam

Boiler horsepower

A

Temperature

2
Q

In a watertube boiler the heat and gases of combustion pass_____

Through the tubes

Around the tubes

A

Around the tubes

3
Q

Stays and braces are needed to prevent bulging in______

Any watertube boiler

A high pressure watertube boiler

A firetube boiler high or low pressure

A

A firetube boiler high or low pressure

4
Q

The_____boiler was developed to provide steam at higher pressure

HRT

Firetube

Watertube

Combination

A

Watertube

5
Q

If it is necessary to test relieving capacity of a safety valve______

An accumulation test is put on the boiler

A hydrostatic test is put on the boiler

The boiler must be secured and off line

A

An accumulation test is put on the boiler

6
Q

A whistle valve is used to_____

Indicate is 12:00 noon

Indicate a shift change

Warm the operator of high or low water

A

Warm the operator of high or low water

7
Q

The pressure at the base of a vertical foot of water is______psi

  1. 433
  2. 3
  3. 7
  4. 5
A

0.433

8
Q

Steam separators work on the principle of

Potential energy

Kinetic energy

Trapping steam and letting water through

Changing the direction of the steam flow

A

Changing the direction of the steam flow

9
Q

The dry pipe is located in the_____

Upper part of the steam and water drum

Superheater outlet header

Main steam line

Line before the turbine throttle

A

Upper part of the steam and water drum

10
Q

Saturated steam is steam at_____

A higher temperature than its corresponding pressure

Its corresponding temperature and pressure

A dry state

The superheater outlet

A

Its corresponding temperature and pressure

11
Q

Soot blowers are mainly found on______

Waterwalls

Watertube boilers

Firetube boilers

Main breeching

A

Watertube boilers

12
Q

The main steam stop valve should be gate valves because they_____

Can restrict the flow of steam

Can be used as throttling valves

Do not have to be fully open

Offer no restriction to the flow of steam

A

Offers no restrictions to the flow of steam

13
Q

When the boiler is equipped with hand operated main steam stop valves. To cut the boiler in on the line the steam pressure on the incoming boiler should be_____

Slightly higher than line pressure

Equal to line pressure

Slightly lower than line pressure

Makes no difference pressure will equalize

A

Slightly lower than line pressure

14
Q

During boiler warm-up to remove any condensate trap between the two boiler to stop valves

Free blowing drain should be open

Superheaters drain should be open

Boiler vent should be open

A

Free blowing drain should be open

15
Q

The maximum size of the bottom blowdown line and the surface blowdown line is____”

1 1/2

2 1/2

3

A

2 1/2