NJ Refrigeration Blue Seal 2-C Exam Questions
and Correct Answers Latest Version Top Rated
A+
Question 1
Optimum cooling tower water pH is:
Correct Answer
8
Question 2
The counter-flow principle is an important feature of:
Correct Answer
double piped water cooled condenser
Question 3
How many lbs of refrigerant can be stored in a cylinder with a 125 lb capacity?
Correct Answer
100 lbs
Page 1 of 18
,Question 4
The force exerted on a 4" piston with a cyl pressure of 100 psi is:
Correct Answer
1,256 lbs
Question 5
Which temperature scale refers to the absolute Celsius scale?
Correct Answer
Kelvin
Question 6
What is the function of a dual control device on a single acting reciprocating compressor?
Correct Answer
Constant speed control & automatic starts and stops
Question 7
Which chemistry is used to determine tower water cycles?
Correct Answer
chlorides
Page 2 of 18
, Question 8
Which seal would not be used on a compressor?
Correct Answer
Mechanical seal
Question 9
Why pre cool air in an ice making plant?
Correct Answer
To prevent freezing of air lines
Question 10
How often do you inspect safety valves?
Correct Answer
every year
Question 11
What is a sling psychrometer device is used to measure?
Correct Answer
relative humidity
Page 3 of 18
and Correct Answers Latest Version Top Rated
A+
Question 1
Optimum cooling tower water pH is:
Correct Answer
8
Question 2
The counter-flow principle is an important feature of:
Correct Answer
double piped water cooled condenser
Question 3
How many lbs of refrigerant can be stored in a cylinder with a 125 lb capacity?
Correct Answer
100 lbs
Page 1 of 18
,Question 4
The force exerted on a 4" piston with a cyl pressure of 100 psi is:
Correct Answer
1,256 lbs
Question 5
Which temperature scale refers to the absolute Celsius scale?
Correct Answer
Kelvin
Question 6
What is the function of a dual control device on a single acting reciprocating compressor?
Correct Answer
Constant speed control & automatic starts and stops
Question 7
Which chemistry is used to determine tower water cycles?
Correct Answer
chlorides
Page 2 of 18
, Question 8
Which seal would not be used on a compressor?
Correct Answer
Mechanical seal
Question 9
Why pre cool air in an ice making plant?
Correct Answer
To prevent freezing of air lines
Question 10
How often do you inspect safety valves?
Correct Answer
every year
Question 11
What is a sling psychrometer device is used to measure?
Correct Answer
relative humidity
Page 3 of 18
