fdny z51
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FDNY LT Exam practice 1 questions with 100% correct answers
- Exam (elaborations) • 3 pages • 2023
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What 10 code is transmitted for fire in a high rise MD? 
10-77 
 
 
 
What 10 code is transmitted for a fire in a high rise office building? 
10-76 
 
 
 
What are the criteria for a mayday? 
I O U My Life. 
Imminent collapse 
Occurred collapse 
Unresponsive member 
Missing member 
Lost member 
 
 
 
What are the criteria for an urgent transmission? 
BLIFE 
Backing out (interior attack discontinued) 
Loss of water 
Injured member (non life threatening) 
Fear of collapse 
Fire in exposures 
 
 
 ...
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Z-51 REFRIGERATION TEST QUESTIONS AND ANSWERS 2023
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Efficiency of the refrigerant cycle is affected by the operations of the condenser. Of the following, a more efficient centrifugal compressor operation results from: 
Lowering the condensing pressure 
 
 
 
The heat removed from the refrigerant in a condenser is: 
Sensible and latent heat 
 
 
 
The refrigerant unit that you have been assigned to is being taken out of service for a major repair. You have been assigned to withdraw refrigerant for storage in suitable containers. According to the N...
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Z-51 EXAM 2023|400 QUESTIONS AND ANSWERS
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How do automatic expansion valves work? 
Evaporator pressure closes the valve and spring pressure opens the valve. 
 
 
 
When will a faulty check valve cause the most damage? 
On startup. 
 
 
 
What will happen if a TEV'S sensing bulb insulation wears off of the suction line in an 85 F Degree room? 
You will flood the evaporator. 
 
 
 
What can a clogged pump strainer cause? 
A reduction or loss in water flow which will lead to high condenser head pressure. 
 
 
 
What part of the Refrigerat...
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FDNY written z51 questions| 222 questions and answers.
- Exam (elaborations) • 39 pages • 2023
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The efficiency of the refrigerant cycle is affected by the operation of the condenser. of the following. a more efficient centrifugal compressor operation results from: 
Lowering the condensing pressure 
 
 
 
The heat removed from the refrigerant in a condenser is: 
Sensible and latent heat 
 
 
 
The refrigerant unit that you have been assigned to is being taken out of service for a major repair. you have been assigned to withdraw refrigerant for storage in suitable containers. according to th...
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FDNY written z51 questions and answers already graded A+ 2023
- Exam (elaborations) • 23 pages • 2023
- Available in package deal
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- $14.49
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The efficiency of the refrigerant cycle is affected by the operation of the condenser. of the following. a more efficient centrifugal compressor operation results from: 
Lowering the condensing pressure 
 
 
 
The heat removed from the refrigerant in a condenser is: 
Sensible and latent heat 
 
 
 
The refrigerant unit that you have been assigned to is being taken out of service for a major repair. you have been assigned to withdraw refrigerant for storage in suitable containers. according to th...
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FDNY written z51 questions and answers 2023 latest update already graded A+.
- Exam (elaborations) • 23 pages • 2023
- Available in package deal
-
- $15.49
- + learn more
The efficiency of the refrigerant cycle is affected by the operation of the condenser. of the following. a more efficient centrifugal compressor operation results from: 
Lowering the condensing pressure 
 
 
 
The heat removed from the refrigerant in a condenser is: 
Sensible and latent heat 
 
 
 
The refrigerant unit that you have been assigned to is being taken out of service for a major repair. you have been assigned to withdraw refrigerant for storage in suitable containers. according to th...
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fdny z51 rmo questions with 100% correct answers.
- Exam (elaborations) • 12 pages • 2023
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the efficiency of the refrigerant cycle is affected by the operation of the condenser. Of the following, a more efficient centrifugal compressor operation results from 
lowering the condenser pressure 
 
 
 
In most semi hermetic compressors, the suction vapor is used for 
cools the motor 
 
 
 
The amount of refrigerant that flows through the orifices of an economizer is determined by the 
difference between the high side and the low side pressure 
 
 
 
the instalation of an inline refrigerant...
-
FDNY written z51 questions and answers 2023.
- Exam (elaborations) • 23 pages • 2023
- Available in package deal
-
- $15.49
- + learn more
The efficiency of the refrigerant cycle is affected by the operation of the condenser. of the following. a more efficient centrifugal compressor operation results from: 
Lowering the condensing pressure 
 
 
 
The heat removed from the refrigerant in a condenser is: 
Sensible and latent heat 
 
 
 
The refrigerant unit that you have been assigned to is being taken out of service for a major repair. you have been assigned to withdraw refrigerant for storage in suitable containers. according to th...
-
fdny z51 rmo questions and answers.
- Exam (elaborations) • 12 pages • 2023
- Available in package deal
-
- $13.99
- + learn more
the efficiency of the refrigerant cycle is affected by the operation of the condenser. Of the following, a more efficient centrifugal compressor operation results from 
lowering the condenser pressure 
 
 
 
In most semi hermetic compressors, the suction vapor is used for 
cools the motor 
 
 
 
The amount of refrigerant that flows through the orifices of an economizer is determined by the 
difference between the high side and the low side pressure 
 
 
 
the instalation of an inline refrigerant...
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