q01 FDNY Practice Test

Certificate Q01 FDNY Refrigerating system operating engineer RSOE, is a certificate issued by the FDNY in New York City. The purpose of the certificate is to enable the holder to operate and maintain refrigeration systems.

Many large buildings and businesses that have refrigeration systems require experts in the operation and maintenance of refrigeration systems.

to Q-01 fdny prep need to practice questions covers wide range of topics included Z-51 fdny topics, here will find what you wnat.

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1 / 15

Calculate the required pump head for a cooling tower circulation pump if the system flow rate is 1000 gpm?

52.3 ft

72.3 ft

92.3 ft

112.3 ft

2 / 15

What is the minimum required rupture pressure for the rupture disk in a refrigeration system using R-22?

325 psig

350 psig

275 psig

300 psig

3 / 15

According to ASHRAE Guideline 3, what is the maximum allowable non-condensable gas concentration in a refrigeration system?

0.1% by volume

0.5% by volume

1% by volume

2% by volume

4 / 15

In a transcritical CO₂ refrigeration system, what is the typical range for the gas cooler approach temperature?

0.5-1.5°C

2-5°C

7-10°C

12-15°C

5 / 15

What is the minimum required ultimate strength of steel pipes used for Group A1 refrigerants in NYC?

30,000 psi

35,000 psi

40,000 psi

45,000 psi

6 / 15

Calculate the isentropic efficiency of a compressor if the actual work input is 85 kJ/kg and the isentropic work input is 70 kJ/kg.

82.40%

121.40%

17.60%

78.60%

7 / 15

What is the maximum allowed CO₂ equivalent for a refrigeration system using R-410A in a public assembly occupancy?

100

8 / 15

In a shell-and-tube heat exchanger with a 1-2 pass configuration, what is the correction factor (F) for a temperature effectiveness (P) of 0.7 and a ratio of fluid capacitance rates (R) of 0.8?

0.85

0.92

0.98

0.76

9 / 15

What is the minimum required ventilation rate for a machinery room containing ammonia refrigeration equipment?

5 cfm/ft²

0.5 cfm/ft²

2 cfm/ft²

1 cfm/ft²

10 / 15

According to NFPA 70, what is the maximum allowed voltage for a Class 2 remote-control circuit?

24V

30V

42.4V

50V

11 / 15

In a steam turbine-driven centrifugal chiller, what is the primary purpose of the gland seal system?

Lubricate bearings

Prevent air ingress

Control turbine speed

Regulate steam flow

12 / 15

Which type of metering device is most suitable for a system with widely varying load conditions?

Capillary tube

Thermostatic expansion valve

Electronic expansion valve

Float valve

13 / 15

Calculate the mass flow rate of refrigerant in a system with a cooling capacity of 500 kW using R-134a.

3.33 kg/s

0.30 kg/s

75.00 kg/s

33.33 kg/s

14 / 15

In a centrifugal compressor, what phenomenon occurs when the flow rate drops below a critical value?

Cavitation

Surge

Choke

Stonewall

15 / 15

What is the maximum allowable concentration of R-717 (ammonia) in an occupied space according to ASHRAE Standard 15?

25 ppm

50 ppm

100 ppm

150 ppm

Theoretical Knowledge (Z-51 Exam Topics):

Compressors.
Steam Turbines.
Plant Operations.
Fire Safety.
Heat Exchangers.
Refrigerants.
Service Practices.
Metering Devices.
Pumps and Accessories.
Electrical Components.
Cooling Mediums.
Mathematical Computations.
Piping System.
NYC Building and Fire Codes.
Safety Precautions.
Refrigerant Recovery and Recycling.
Building Operation and Maintenance.
NYC Building and Fire Codes.
Safety Precautions.
Refrigerant Recovery and Recycling.
Building Operation and Maintenanc.

Information about Q01 FDNY exam

Operations which includes, but is not limited to, questions on the following areas at a comprehension-level of learning:
Component Identification, Component Function, Gauge Reading, Temperature/Pressure Difference Calculations, and Use of Pressure/Temperature Charts and Conversions are the topics covered in this section.
Each component’s placements and functionalities must be understood by you.

2. Validation of Repairs/Maintenance: which comprises questions at the understanding level of learning pertaining to the following subjects, among others:
Normal maintenance and repair issues; b. Repair validation; c. Startup protocols

3. Refrigerant Handling: which includes, but is not limited to, questions on the following topics at a comprehension-level of learning:
A. Recuperated; B. Charged.

4. Troubleshooting/Diagnosis of Issues: This category covers questions pertaining to diagnosing and troubleshooting issues with system operations, but is not restricted to them. In order to answer the questions, you must evaluate the readings and determine whether reference material is needed.

5. Questions with many steps
a. Although there are several subquestions in these questions, they don’t get as complex as a scenario.
b. They cover topics covered in all of the aforementioned categories and are a blend of comprehension- and application-level learning.
Each system has a single multi-step question. There can be no more than six follow-up questions for a multi-step query.

6. Situations
a. These questions are at an application-level of learning and will, by their cumulative nature, incorporate aspects of the question/scenario that connect to the other categories
b. For instance, the reciprocating unit’s end-to-end recovery process would go under this category, but one inquiry about understanding that process would fall under the troubleshooting area.