1|Page
FDNY Z-51 Exam Newest Complete All Questions And
Correct Detailed Answers (Verified Answers) |Already
Graded A+||Latest Exam Version!!!
Insecticidal fogging operations are hazardous because
chemicals
A) are corrosive.
B) are water-reactive.
C) may be toxic.
D) are highly unstable. - Answer-C) may be toxic.
Where is emergency power not required according to
code?
A) Fire pumps.
B) High rise elevators.
C) Egress illumination.
D) Data centers. - Answer-D) Data centers.
,2|Page
A technician shows up to service the fire alarm panel in
your building. What COF qualifications must he/she have?
A) A Q-01/Q-99 Certificate of Qualification holder who is
designated by the building owner.
B) A certified Fire Safety Director who is designated by the
building owner.
C) A S-95 Certificate of Fitness holder who is employed by
a FDNY certified company.
D) A S-97/S-98 Certificate of Fitness holder who is
employed by a FDNY certified company. - Answer-D) A S-
97/S-98 Certificate of Fitness holder who is employed by a
FDNY certified company.
In a steam turbine, what is the function of a Kingsbury
thrust bearing?
A) Maintain first stage steam pressure.
B) Compensate for coupling misalignment.
C) Adjust shaft torque at start up.
D) Maintain axial positioning of the rotor shaft. - Answer-D)
Maintain axial positioning of the rotor shaft.
,3|Page
The ratio of actual pressure of water pressure in the
atmosphere to the saturated pressure of given
temperature is
A) partial pressure.
B) relative humidity.
C) humidity effect.
D) absolute humidity. - Answer-
The total amount of heat to be removed from the
refrigerant in a condenser equals the heat picked up in the
A) evaporator plus the heat of compression.
B) evaporator.
C) evaporator plus the heat of included non-condensable.
D) evaporator less the heat given up in the muffler. -
Answer-
When must the Fire Department be notified that a fire
protection system is out of service?
, 4|Page
A) The manual pull alarm station in the lobby will be out of
service for 4 hours.
B) Four sprinkler heads on a same floor of your building
will be out of service for 2 hours.
C) The sprinkler system will be out of service on 1st and
2nd floors.
D) The fire alarm system is out of service in the
refrigerating system room for g hours. - Answer-C) The
sprinkler system will be out of service on 1st and 2nd
floors.
Hot work authorizations are issued by
A) a Responsible Person designated by the Building
Owner.
B) a Building Department inspector.
C) a FDNY inspector.
D) the Building owner's insurance company. - Answer-A) a
Responsible Person designated by the building owner.
FDNY Z-51 Exam Newest Complete All Questions And
Correct Detailed Answers (Verified Answers) |Already
Graded A+||Latest Exam Version!!!
Insecticidal fogging operations are hazardous because
chemicals
A) are corrosive.
B) are water-reactive.
C) may be toxic.
D) are highly unstable. - Answer-C) may be toxic.
Where is emergency power not required according to
code?
A) Fire pumps.
B) High rise elevators.
C) Egress illumination.
D) Data centers. - Answer-D) Data centers.
,2|Page
A technician shows up to service the fire alarm panel in
your building. What COF qualifications must he/she have?
A) A Q-01/Q-99 Certificate of Qualification holder who is
designated by the building owner.
B) A certified Fire Safety Director who is designated by the
building owner.
C) A S-95 Certificate of Fitness holder who is employed by
a FDNY certified company.
D) A S-97/S-98 Certificate of Fitness holder who is
employed by a FDNY certified company. - Answer-D) A S-
97/S-98 Certificate of Fitness holder who is employed by a
FDNY certified company.
In a steam turbine, what is the function of a Kingsbury
thrust bearing?
A) Maintain first stage steam pressure.
B) Compensate for coupling misalignment.
C) Adjust shaft torque at start up.
D) Maintain axial positioning of the rotor shaft. - Answer-D)
Maintain axial positioning of the rotor shaft.
,3|Page
The ratio of actual pressure of water pressure in the
atmosphere to the saturated pressure of given
temperature is
A) partial pressure.
B) relative humidity.
C) humidity effect.
D) absolute humidity. - Answer-
The total amount of heat to be removed from the
refrigerant in a condenser equals the heat picked up in the
A) evaporator plus the heat of compression.
B) evaporator.
C) evaporator plus the heat of included non-condensable.
D) evaporator less the heat given up in the muffler. -
Answer-
When must the Fire Department be notified that a fire
protection system is out of service?
, 4|Page
A) The manual pull alarm station in the lobby will be out of
service for 4 hours.
B) Four sprinkler heads on a same floor of your building
will be out of service for 2 hours.
C) The sprinkler system will be out of service on 1st and
2nd floors.
D) The fire alarm system is out of service in the
refrigerating system room for g hours. - Answer-C) The
sprinkler system will be out of service on 1st and 2nd
floors.
Hot work authorizations are issued by
A) a Responsible Person designated by the Building
Owner.
B) a Building Department inspector.
C) a FDNY inspector.
D) the Building owner's insurance company. - Answer-A) a
Responsible Person designated by the building owner.
