NYC NYCHA Thermostat Repairer
Examination Full Practice Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
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1. The primary function of a thermostat in a residential heating system is
to:
A. Regulate fuel flow
B. Sense room temperature and control system operation
C. Increase boiler pressure
D. Filter air contaminants
Correct Answer: B
Rationale: A thermostat senses ambient temperature and signals heating
or cooling equipment to turn on or off to maintain a set point.
, 2. Which type of thermostat uses a coiled metal strip made of two
different metals?
A. Digital thermostat
B. Thermistor thermostat
C. Bimetallic thermostat
D. Pneumatic thermostat
Correct Answer: C
Rationale: Bimetallic thermostats rely on two bonded metals that expand
at different rates to open or close electrical contacts.
3. A thermostat that requires no external power source is typically
classified as:
A. Line-voltage thermostat
B. Low-voltage electronic thermostat
C. Mechanical thermostat
D. Smart thermostat
Correct Answer: C
Rationale: Mechanical thermostats operate using physical movement and
do not require batteries or external power.
4. In a low-voltage heating control system, the most common control
voltage is:
, A. 120 volts
B. 208 volts
C. 240 volts
D. 24 volts
Correct Answer: D
Rationale: Most residential heating control circuits operate on 24 volts
supplied by a transformer.
5. Which tool is most appropriate for checking thermostat continuity?
A. Clamp ammeter
B. Manometer
C. Multimeter
D. Torque wrench
Correct Answer: C
Rationale: A multimeter can measure resistance and continuity to verify
proper thermostat contact operation.
6. A thermostat that cycles equipment too frequently is most likely
affected by:
A. Poor insulation
B. Incorrect anticipator setting
, C. Dirty air filter
D. Low system voltage
Correct Answer: B
Rationale: The heat anticipator controls cycle length, and improper
adjustment can cause short cycling.
7. What component inside a thermostat helps prevent temperature
overshoot?
A. Transformer
B. Relay
C. Heat anticipator
D. Limit switch
Correct Answer: C
Rationale: The heat anticipator slightly warms the sensing element to shut
the system off before overshooting the set temperature.
8. Which thermostat type allows scheduling different temperatures
throughout the day?
A. Manual thermostat
B. Line-voltage thermostat
C. Programmable thermostat
D. Pneumatic thermostat
Examination Full Practice Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
Download Pdf
1. The primary function of a thermostat in a residential heating system is
to:
A. Regulate fuel flow
B. Sense room temperature and control system operation
C. Increase boiler pressure
D. Filter air contaminants
Correct Answer: B
Rationale: A thermostat senses ambient temperature and signals heating
or cooling equipment to turn on or off to maintain a set point.
, 2. Which type of thermostat uses a coiled metal strip made of two
different metals?
A. Digital thermostat
B. Thermistor thermostat
C. Bimetallic thermostat
D. Pneumatic thermostat
Correct Answer: C
Rationale: Bimetallic thermostats rely on two bonded metals that expand
at different rates to open or close electrical contacts.
3. A thermostat that requires no external power source is typically
classified as:
A. Line-voltage thermostat
B. Low-voltage electronic thermostat
C. Mechanical thermostat
D. Smart thermostat
Correct Answer: C
Rationale: Mechanical thermostats operate using physical movement and
do not require batteries or external power.
4. In a low-voltage heating control system, the most common control
voltage is:
, A. 120 volts
B. 208 volts
C. 240 volts
D. 24 volts
Correct Answer: D
Rationale: Most residential heating control circuits operate on 24 volts
supplied by a transformer.
5. Which tool is most appropriate for checking thermostat continuity?
A. Clamp ammeter
B. Manometer
C. Multimeter
D. Torque wrench
Correct Answer: C
Rationale: A multimeter can measure resistance and continuity to verify
proper thermostat contact operation.
6. A thermostat that cycles equipment too frequently is most likely
affected by:
A. Poor insulation
B. Incorrect anticipator setting
, C. Dirty air filter
D. Low system voltage
Correct Answer: B
Rationale: The heat anticipator controls cycle length, and improper
adjustment can cause short cycling.
7. What component inside a thermostat helps prevent temperature
overshoot?
A. Transformer
B. Relay
C. Heat anticipator
D. Limit switch
Correct Answer: C
Rationale: The heat anticipator slightly warms the sensing element to shut
the system off before overshooting the set temperature.
8. Which thermostat type allows scheduling different temperatures
throughout the day?
A. Manual thermostat
B. Line-voltage thermostat
C. Programmable thermostat
D. Pneumatic thermostat
