Question 1
A three-phase, star-connected system has a measured line-to-line voltage of 400 V. What is the approximate phase voltage of this system?
Correct Answer:
230 V
Question 2
In a delta-connected three-phase load, the measured phase current is 10 A. What is the line current supplying the load?
Correct Answer:
17.3 A
Question 3
An industrial electrical installation draws 4 kW of active power and has an apparent power consumption of 5 kVA. What is the power factor of this installation?
Correct Answer:
0.80
Question 4
A factory installation consumes 8 kW of active power (P) and has an apparent power (S) of 10 kVA. What is the reactive power (Q) drawn by this circuit?
Correct Answer:
6 kVAR
Question 5
A 4-pole AC induction motor is connected to a 50 Hz supply. If the rotor runs at an actual speed of 1440 RPM, what is the slip of the motor?
Correct Answer:
4.0%
Question 1
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About this Exam

Prepare with the NVQ L4 Refrigeration & AC Practice Questions - Sri Lanka NVQ Level 4 Refrigeration and Air Conditioning Technician Written Examination Exam practice quiz. This question bank includes 100 questions covering compressor, refrigerant, pressure, valve, and primary. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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NVQ L4 Refrigeration & AC Practice Questions - Sri Lanka NVQ Level 4 Refrigeration and Air Conditioning Technician Written Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on compressor, refrigerant, pressure, valve, and primary. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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