Pipefitter Star Exam Part 1 Questions and Answers |
Fall 2025/2026 Update | 100% Correct
Question 1
Violent flashing and collapsing of vapor bubbles in a centrifugal pump is called.
Correct Answer
Cavitation
Question 2
Device that controls the pressure in a low pressure steam boiler
Correct Answer
Pressuretrol
Question 3
Function of an evaporator
Correct Answer
Absorb heat from the system
Page 1 of 50
,Question 4
Metal which has a high iron content
Correct Answer
ferrous
Question 5
Why should the angle between the leg of a swing and the load never be less than 30 degrees?
Correct Answer
More stress loads are applied on the sling
Question 6
What are two kinds of misalignment that must be checked for when installing pumps?
Correct Answer
Parallel and angular alignment
Question 7
What is the function of a compressor?
Correct Answer
Create flow in the system
Page 2 of 50
,Question 8
After fittings and tubes are cleaned and fluxed, they should be assembled and soldered
Correct Answer
As soon as possible
Question 9
The relief valve is sized to the ________ rating of a boiler
Correct Answer
Gross Output
Question 10
Four types of copper tube joints
Correct Answer
Soldered, Brazed, Flared, Compression
Question 11
Most common hanger type
Correct Answer
Clevis
Page 3 of 50
, Question 12
Which hitch can support the most weight?
Correct Answer
Basket Hitch
Question 13
Minimum safe working distance for overhead power lines
Correct Answer
10 feet
Question 14
Three basic hitches which can be used for lifting with a sling
Correct Answer
Straight, Choker, Basket
Question 15
Amount of heat required to bring about a change in a state in a substance
Correct Answer
Latent heat
Page 4 of 50
Fall 2025/2026 Update | 100% Correct
Question 1
Violent flashing and collapsing of vapor bubbles in a centrifugal pump is called.
Correct Answer
Cavitation
Question 2
Device that controls the pressure in a low pressure steam boiler
Correct Answer
Pressuretrol
Question 3
Function of an evaporator
Correct Answer
Absorb heat from the system
Page 1 of 50
,Question 4
Metal which has a high iron content
Correct Answer
ferrous
Question 5
Why should the angle between the leg of a swing and the load never be less than 30 degrees?
Correct Answer
More stress loads are applied on the sling
Question 6
What are two kinds of misalignment that must be checked for when installing pumps?
Correct Answer
Parallel and angular alignment
Question 7
What is the function of a compressor?
Correct Answer
Create flow in the system
Page 2 of 50
,Question 8
After fittings and tubes are cleaned and fluxed, they should be assembled and soldered
Correct Answer
As soon as possible
Question 9
The relief valve is sized to the ________ rating of a boiler
Correct Answer
Gross Output
Question 10
Four types of copper tube joints
Correct Answer
Soldered, Brazed, Flared, Compression
Question 11
Most common hanger type
Correct Answer
Clevis
Page 3 of 50
, Question 12
Which hitch can support the most weight?
Correct Answer
Basket Hitch
Question 13
Minimum safe working distance for overhead power lines
Correct Answer
10 feet
Question 14
Three basic hitches which can be used for lifting with a sling
Correct Answer
Straight, Choker, Basket
Question 15
Amount of heat required to bring about a change in a state in a substance
Correct Answer
Latent heat
Page 4 of 50
