IESL Part II Electrical Practice Questions - IESL Qualifying Examination Part II - Electrical Engineering Exam - IESL Part II Electrical Practice Questions - IESL Qualifying Examination Part II

Question 1

A 50 kVA, 2400/240 V, single-phase transformer has an equivalent resistance of 1.5% and an equivalent reactance of 4.0%. What is the voltage regulation of this transformer when operating at full load with a power factor of 0.8 lagging?

2.4% 3.2% 3.6% 5.0%

Correct Answer:

3.6%

Question 2

Which of the following describes the phase relationship between the primary and secondary line voltages in a three-phase transformer with a Dy11 vector group?

Secondary line voltage is in phase with the primary line voltage. Secondary line voltage lags the primary line voltage by 30 degrees. Secondary line voltage leads the primary line voltage by 30 degrees. Secondary line voltage leads the primary line voltage by 180 degrees.

Correct Answer:

Secondary line voltage leads the primary line voltage by 30 degrees.

Question 3

A 4-pole, three-phase, 50 Hz induction motor runs at a speed of 1440 RPM at full load. What is the frequency of the rotor currents under this operating condition?

1.0 Hz 2.0 Hz 3.0 Hz 50.0 Hz

Correct Answer:

2.0 Hz

Question 4

For a three-phase induction motor, how does the maximum torque developed relate to the rotor resistance (R2) per phase?

The maximum torque is directly proportional to R2. The maximum torque is inversely proportional to R2. The maximum torque is independent of R2, but the slip at which it occurs is directly proportional to R2. The maximum torque is independent of R2, and the slip at which it occurs is inversely proportional to R2.

Correct Answer:

The maximum torque is independent of R2, but the slip at which it occurs is directly proportional to R2.

Question 5

In a synchronous motor, the V-curves represent the relationship between which two operational parameters?

Armature current and torque at constant speed Armature current and field current at constant load Power factor and speed at constant excitation Torque and speed at variable excitation

Correct Answer:

Armature current and field current at constant load

Exam overview

About this Exam

Prepare with the IESL Part II Electrical Practice Questions - IESL Qualifying Examination Part II - Electrical Engineering Exam practice quiz. This question bank includes 100 questions covering line, load, motor, field, and transmission. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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IESL Part II Electrical Practice Questions - IESL Qualifying Examination Part II - Electrical Engineering Exam

This practice set contains 100 questions from the matching question bank and focuses on line, load, motor, field, and transmission. 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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IESL Part II Electrical Practice Questions - IESL Qualifying Examination Part II - Electrical Engineering Exam

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