Synchronous Generator MCQ Part 1. Multiple choice questions on Synchronous Generator (Alternator) Low speed alternators are driven by which of following turbines Low speed alternators are driven by which of following turbines: Steam turbines Steam engines Hydraulic turbines None of these Correct answer: 3. Hydraulic turbines Low speed alternators are driven by hydraulic turbines. Good … Read more
Induction Motor MCQ Part 3 Multiple choice questions on Induction Motor If one phase from three-phase supply to a three-phase induction motor is interchanged what happens to the flux and direction If one phase from three-phase supply to a three-phase induction motor is interchanged what happens to the flux and direction: Flux decreases and direction … Read more
Synchronous Motor MCQ Part 5. Multiple choice questions on Synchronous motor. What is value of full load slip of synchronous motor What is value of full load slip of synchronous motor: 1% 3% 8% 0 Correct answer: 4. 0 The value of full load slip of synchronous motor is 0 Which factor determines the size … Read more
The minimum phase to the neutral voltage at which corona effect occurs in transmission lines is known as: Flash-over voltage Damper voltage Critical disruptive voltage Occurrence voltage Correct answer: 3. Critical disruptive voltage The minimum phase to the neutral voltage at which corona effect occurs in transmission lines is known as critical disruptive voltage.
Given below are four different types of sensors mentioned. Of given sensors which of the following is not an analog sensor: LDR Potentiometer DS1620 Linear hall sensor Correct answer: 3. DS1620 Of the mentioned devices, the DS1620 is a Digital Thermometer. DS1620 Thermostat provides 9–bit temperature readings which indicatethe temperature of the device. (Source: Maxim … Read more
Basic Electrical Engineering MCQ Part 2 Point Source Example The figure below displays an electric circuit drawn using point source: The voltmeter connected across 15 kohm resistor will read: 3 V 5 V 10 V 15 V Correct answer: 4. 15 V Explanation: The circuit redrawn to normal circuit as follows: Total input: Vin = … Read more
Induction Motor MCQ Part 2 Under: Induction Motor MCQ For higher efficiency of 3 phase induction motor, the slip should be For higher efficiency of 3 phase induction motor, the slip should be: Very large Large Medium Small Correct answer: 4. Small For higher efficiency of 3 phase induction motor, the slip should be as … Read more
Synchronous Motor MCQ Part 4. Under: Synchronous motor multiple choice questions The speed regulation of a synchronous motor is always The speed regulation of a synchronous motor is always: Positive Negative 50% Zero Correct answer: 4. Zero Speed regulation is mathematically defined as: SR = (ηnl – ηfl)/ηfl * 100% Since in synchronous motor the … Read more
Synchronous motor MCQ Part 3 The synchronous motor is best described as The synchronous motor is best described as: Singly fed motor Variable power factor motor Variable speed motor None of the above Correct answer: 2. Variable power factor motor The synchronous motor is best described as since it can operate at different power factors … Read more
