The breaking capacity of circuit breaker is expressed in
The breaking capacity of circuit breaker is expressed in: Amps VA kVA MVA Correct answer: 4. MVA
MCQs
The breaking capacity of the circuit breaker is expressed in
The breaking capacity of the circuit breaker is expressed in: Amps VA kVA MVA Correct answer: 4. MVA
IED devices are loaded with function | Power System Protection MCQ
IED devices are loaded with function: Protection Control Monitoring Communications All of these Correct answer: 5. All of these Explanation: IED (Intelligent electronic devices) are loaded with protection, controlling, monitoring, and communication functions. Alongside this, they also perform metering functions.
Microprocessor relay belongs to which class of relays | Power System Protection MCQ
Microprocessor relay belongs to which class of relays: Electromechanical relay Analog Static relay Digital Static relay None of these Correct answer: 3. Digital Static Relay Explanation: The microprocessor relay belongs to the Digital Static Class of relays. A microprocessor relay is one of the most advanced types of relay found in modern protection systems.
Overheating of Transformer Happens Due to | Power System Protection MCQ
Overheating of the transformer happens due to: Overloading Short-circuits Both of these None of these Correct answer: 3. Both of these There are two major facts which cause overheating in transformer: Overloading Short-circuits Alongside overloading and short-circuits, failure of the transformer cooling system might also lead to overheating. However, this is rare as compared to … Read more
Which of the following statement is correct WRT Turbo alternator overvoltage protection | Power System Protection MCQ
Which of the following statement is correct WRT Turbo-alternator overvoltage protection: Turbo alternators are provided with the most critical protection Control governors are merely sensitive Overvoltage protection is usually not provided in turbo alternator None of these Correct answer: 3. Overvoltage protection is usually not provided in turbo alternator Control governors in turbo-alternators themselves are … Read more
Earth fault current is less or more than short-circuit current | Power System Protection MCQ
Earth fault current is less or more than short-circuit current: Less More Equal in magnitude Any of the above Correct answer: 1. Less
Alternator Inverted Running occurs due to which fault | Power System Protection MCQ
Alternator Inverted Running occurs due to which fault: Failure of prime-mover Overvoltage winding fault Failure of rotor Correct answer: 1. Failure of prime-mover Explanation: When connected prime-mover fails, the alternator starts drawing current from the source. In other terms, the alternator behaves like a synchronous motor. In technical terms, Protection Engineers refer this term as … Read more
The most dangerous fault in the alternator is | Power System Protection MCQ
The most dangerous fault in the alternator is: Failure of prime-mover Over voltage Stator winding fault Failure of rotor Correct answer: 3. Stator winding fault More MCQ on Power System Protection
Zero power factor method in alternator is used to determine which parameter
Zero power factor method in the alternator is used to determine which parameter: Efficiency Voltage regulation Synchronous impedance Armature resistance Correct answer: 2. Voltage regulation