Back to Back HVDC is practically used to achieve which of the below mentioned objectives: Interconnect two asynchronous AC systems Stabilization of AC systems For reducing short circuit currents All of these Correct answer: 4. All of these Back to ...
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Which of the following can be the internal cause of overvoltage in a power system
ElectricWhich of the following can be the internal cause of overvoltage in a power system: Closing unloaded line Opening loaded line Insulation failure None of these All of these Correct answer: 5. All of these
Generally, Relay protection is not provided for
ElectricGenerally, Relay protection is not provided for: Alternator field failure Overcurrent in alternators Small distribution transformers All of these Correct answer: 4. All of these
The busbar protection means protection of
ElectricThe busbar protection means protection of: Circuit breakers Isolating switches Busbar only All of these Correct answer: 4. All of these
Power Generation MCQ Part 20
ElectricElectric Power Generation Multiple choice questions Part 20.
The term pulverized coal is best defined as
ElectricThe term pulverized coal is best defined as: Coal that doesn’t burns at all Coal which bums for a long time Coal that is broken down into fine particles Coal that is free from ash contents Correct answer: 3. Coal ...
The line resistance R and inductive reactance XL in the transmission line are mathematically related as
ElectricThe line resistance R and inductive reactance XL in transmission line are mathematically related as: XL < R XL = R XL > R None of these Correct answer: 3. XL > R
If length of arc in circuit breaker increases its resistance
ElectricIf length of arc in circuit breaker increases its resistance: Increases Decreases Remains the same None of these Correct answer: 1. Increases
Corona losses are minimized when
ElectricCorona losses are minimized when: Smooth conductor is used Conductor size is reduced Current density in conductors in reduced None of above Correct answer: 1. Smooth conductor is used
The string efficiency of high voltage line is around
ElectricThe string efficiency of high voltage line is around: 10% 20% 40% 80% Correct answer: 4. 80%