NYC Radio Repair Mechanic Exam| Practice Questions
And Answers 2026/2027 | Complete Questions And
Answers (Verified Answers) | Exam Prep |
Comprehensive Exam Guide 2026&2027
1. A radio receiver has normal power-supply voltages, but no audio is heard from the
speaker. The technician confirms that a strong RF signal is reaching the receiver input.
Which troubleshooting step is MOST appropriate next?
A. Replace the antenna immediately
B. Check the audio amplifier and speaker circuit
C. Increase the transmitter power
D. Replace the receiver power transformer
Answer: B
The presence of a strong RF signal with no audio output directs troubleshooting toward the
detector, audio stages, speaker circuit, or associated connections rather than immediately
replacing the antenna or power supply.
2. Before servicing a radio installed in a vehicle, which action should be performed FIRST?
A. Increase the squelch setting
B. Tune the transmitter
C. Disconnect or isolate the power source as appropriate
D. Remove the antenna connector
Answer: C
Electrical energy should be controlled before service begins. Proper isolation reduces the risk
of accidental energization, short circuits, equipment damage, and electrical injury.
3. A technician measures a resistor marked 1 kΩ and obtains approximately 1.02 kΩ with a
digital multimeter. What is the MOST reasonable conclusion?
A. The resistor is necessarily defective
B. The meter must be recalibrated
C. The circuit has an open ground
D. The measured value is reasonably close to the nominal value**
Answer: D
,A 1.02 kΩ measurement is close to the nominal 1 kΩ value and may fall within the
component's specified tolerance. A component should not be condemned solely from a small
deviation without considering tolerance and circuit conditions.
4. What is the primary purpose of an oscilloscope when troubleshooting electronic
equipment?
A. To observe electrical waveforms as they vary with time
B. To measure only DC resistance
C. To determine antenna tower height
D. To replace every function of a spectrum analyzer
Answer: A
An oscilloscope displays voltage or related electrical signals versus time, allowing a technician
to evaluate waveform shape, amplitude, timing, distortion, and other characteristics.
5. A radio transmitter produces substantially less RF output power than specified while its
supply voltage remains normal. Which measurement would be particularly useful for
locating the fault?
A. Cabinet temperature only
B. RF output and stage-by-stage signal levels
C. Speaker cone diameter
D. Battery label color
Answer: B
Comparing RF levels through successive transmitter stages can identify where signal
amplitude begins to fall below the expected level, narrowing the fault to a particular stage or
connection.
6. When interpreting an electronic schematic, what does a ground symbol generally
indicate?
A. A guaranteed physical connection to a water pipe
B. A component that produces RF energy
C. A designated reference or return point in the circuit
D. A fuse rating
Answer: C
A ground symbol identifies a circuit reference or return point. Its exact physical
implementation depends on the equipment design and applicable electrical arrangement.
,7. A receiver exhibits intermittent operation whenever the equipment is moved. Which
initial inspection is MOST appropriate?
A. Replace all transistors
B. Increase receiver sensitivity
C. Change the operating frequency
D. Inspect connectors, solder joints, wiring, and mechanical connections
Answer: D
Movement-sensitive faults commonly result from loose connectors, cracked solder joints,
broken conductors, or other intermittent mechanical connections.
8. Which instrument is specifically useful for measuring standing-wave ratio on an antenna
system?
A. SWR meter
B. Frequency counter
C. Audio oscillator
D. Insulation tester
Answer: A
An SWR meter is used to evaluate the relationship between forward and reflected RF power
and thereby assess antenna-system matching.
9. A fuse repeatedly opens immediately after replacement. What should the technician do?
A. Install a larger fuse
B. Bypass the fuse temporarily
C. Investigate the underlying overload or short circuit
D. Continue replacing fuses until one remains intact
Answer: C
A repeatedly opening fuse indicates that an abnormal current condition may still exist.
Installing a larger fuse or bypassing the protective device can create a serious fire or
equipment hazard.
10. Why should a technician use the correct service manual for a specific radio model?
A. To avoid taking measurements
B. To obtain model-specific procedures, specifications, and tolerances
C. To eliminate the need for safety precautions
D. To determine the technician's salary
, Answer: B
Service manuals provide model-specific information such as alignment procedures, test
points, component specifications, adjustment limits, and troubleshooting guidance.
11. A transmitter's frequency is consistently higher than its specified operating frequency.
Which adjustment is MOST directly related to correcting this problem when the
equipment design permits adjustment?
A. Frequency-determining oscillator or synthesizer circuitry
B. Speaker impedance
C. Microphone grille
D. Cabinet ventilation
Answer: A
Transmit frequency is established by frequency-determining circuitry such as an oscillator,
synthesizer, or related reference system. Correct adjustment must follow the manufacturer's
procedure.
12. Which condition presents the greatest immediate danger when working inside
energized high-voltage equipment?
A. A scratched cabinet
B. A dirty control knob
C. An incorrect label
D. Contact with an energized high-voltage point
Answer: D
Contact with energized high-voltage circuitry can cause severe electric shock, burns, or death.
Appropriate de-energization, isolation, and verification procedures are essential.
13. A technician suspects that a receiver is suffering from excessive noise. What is a useful
first diagnostic approach?
A. Replace the antenna tower
B. Determine whether the noise is internal, external, or interference-related
C. Increase transmitter power
D. Remove the speaker
Answer: B
Determining the source and characteristics of the noise helps distinguish internal circuit noise
from external interference, power-related noise, antenna problems, or environmental
sources.
And Answers 2026/2027 | Complete Questions And
Answers (Verified Answers) | Exam Prep |
Comprehensive Exam Guide 2026&2027
1. A radio receiver has normal power-supply voltages, but no audio is heard from the
speaker. The technician confirms that a strong RF signal is reaching the receiver input.
Which troubleshooting step is MOST appropriate next?
A. Replace the antenna immediately
B. Check the audio amplifier and speaker circuit
C. Increase the transmitter power
D. Replace the receiver power transformer
Answer: B
The presence of a strong RF signal with no audio output directs troubleshooting toward the
detector, audio stages, speaker circuit, or associated connections rather than immediately
replacing the antenna or power supply.
2. Before servicing a radio installed in a vehicle, which action should be performed FIRST?
A. Increase the squelch setting
B. Tune the transmitter
C. Disconnect or isolate the power source as appropriate
D. Remove the antenna connector
Answer: C
Electrical energy should be controlled before service begins. Proper isolation reduces the risk
of accidental energization, short circuits, equipment damage, and electrical injury.
3. A technician measures a resistor marked 1 kΩ and obtains approximately 1.02 kΩ with a
digital multimeter. What is the MOST reasonable conclusion?
A. The resistor is necessarily defective
B. The meter must be recalibrated
C. The circuit has an open ground
D. The measured value is reasonably close to the nominal value**
Answer: D
,A 1.02 kΩ measurement is close to the nominal 1 kΩ value and may fall within the
component's specified tolerance. A component should not be condemned solely from a small
deviation without considering tolerance and circuit conditions.
4. What is the primary purpose of an oscilloscope when troubleshooting electronic
equipment?
A. To observe electrical waveforms as they vary with time
B. To measure only DC resistance
C. To determine antenna tower height
D. To replace every function of a spectrum analyzer
Answer: A
An oscilloscope displays voltage or related electrical signals versus time, allowing a technician
to evaluate waveform shape, amplitude, timing, distortion, and other characteristics.
5. A radio transmitter produces substantially less RF output power than specified while its
supply voltage remains normal. Which measurement would be particularly useful for
locating the fault?
A. Cabinet temperature only
B. RF output and stage-by-stage signal levels
C. Speaker cone diameter
D. Battery label color
Answer: B
Comparing RF levels through successive transmitter stages can identify where signal
amplitude begins to fall below the expected level, narrowing the fault to a particular stage or
connection.
6. When interpreting an electronic schematic, what does a ground symbol generally
indicate?
A. A guaranteed physical connection to a water pipe
B. A component that produces RF energy
C. A designated reference or return point in the circuit
D. A fuse rating
Answer: C
A ground symbol identifies a circuit reference or return point. Its exact physical
implementation depends on the equipment design and applicable electrical arrangement.
,7. A receiver exhibits intermittent operation whenever the equipment is moved. Which
initial inspection is MOST appropriate?
A. Replace all transistors
B. Increase receiver sensitivity
C. Change the operating frequency
D. Inspect connectors, solder joints, wiring, and mechanical connections
Answer: D
Movement-sensitive faults commonly result from loose connectors, cracked solder joints,
broken conductors, or other intermittent mechanical connections.
8. Which instrument is specifically useful for measuring standing-wave ratio on an antenna
system?
A. SWR meter
B. Frequency counter
C. Audio oscillator
D. Insulation tester
Answer: A
An SWR meter is used to evaluate the relationship between forward and reflected RF power
and thereby assess antenna-system matching.
9. A fuse repeatedly opens immediately after replacement. What should the technician do?
A. Install a larger fuse
B. Bypass the fuse temporarily
C. Investigate the underlying overload or short circuit
D. Continue replacing fuses until one remains intact
Answer: C
A repeatedly opening fuse indicates that an abnormal current condition may still exist.
Installing a larger fuse or bypassing the protective device can create a serious fire or
equipment hazard.
10. Why should a technician use the correct service manual for a specific radio model?
A. To avoid taking measurements
B. To obtain model-specific procedures, specifications, and tolerances
C. To eliminate the need for safety precautions
D. To determine the technician's salary
, Answer: B
Service manuals provide model-specific information such as alignment procedures, test
points, component specifications, adjustment limits, and troubleshooting guidance.
11. A transmitter's frequency is consistently higher than its specified operating frequency.
Which adjustment is MOST directly related to correcting this problem when the
equipment design permits adjustment?
A. Frequency-determining oscillator or synthesizer circuitry
B. Speaker impedance
C. Microphone grille
D. Cabinet ventilation
Answer: A
Transmit frequency is established by frequency-determining circuitry such as an oscillator,
synthesizer, or related reference system. Correct adjustment must follow the manufacturer's
procedure.
12. Which condition presents the greatest immediate danger when working inside
energized high-voltage equipment?
A. A scratched cabinet
B. A dirty control knob
C. An incorrect label
D. Contact with an energized high-voltage point
Answer: D
Contact with energized high-voltage circuitry can cause severe electric shock, burns, or death.
Appropriate de-energization, isolation, and verification procedures are essential.
13. A technician suspects that a receiver is suffering from excessive noise. What is a useful
first diagnostic approach?
A. Replace the antenna tower
B. Determine whether the noise is internal, external, or interference-related
C. Increase transmitter power
D. Remove the speaker
Answer: B
Determining the source and characteristics of the noise helps distinguish internal circuit noise
from external interference, power-related noise, antenna problems, or environmental
sources.
