The pick-up current of a 100/5 transformer having a current setting of 200% will be: 2.5 Amps 5 Amps 10 Amps 20 Amps Correct answer: 3. 10 AExplanation: Pick-up current = Rated secondary current * Current setting = 5*2 = 10 A More MCQ on Power System Protection
MPCB stand for: Maximum protection circuit breaker Mere protection circuit breaker Motor protection circuit breaker Max piezo connection board Correct answer: Motor protection circuit breaker MPCB or Motor Protection Circuit breaker is a specialized type of circuit breaker that combines circuit breaker functionality with thermal overload relays for protecting motors against overloading and short circuits. … Read more
The efficiency of transmission lines increases by: Increasing voltage and power factor Increases voltage and decreasing power factor Decreasing voltage and power factor Decreasing voltage and increasing power factor Correct answer: 1. Increasing voltage and power factor Explanation: The transmission line losses are inversely related to the voltage. i.e the higher the voltage the lower … Read more
The collector of a Bipolar Junction transistor is _________ doped Lightly Moderately Heavily Not doped at all Correct answer: 2. moderately
Base of the (BJT) transistor is ________ and ________doped: Thick, Lightly Thick, Heavily Thin, Lightly Thin, Heavily Correct answer: 3. Thin, Lightly
The process by which impurities are added to a pure semiconductor: Diffusing Doping Mixing Installing Correct answer: 2. Doping
In Bipolar Junction Transistor the current is due to ________: Holes Electrons Both of these None of these Correct answer: 3. Both of these
During biasing the base-emitter junction is: Forward biased Reverse Biased Correct answer: 1. Forward biased
BJT is ________ controlled device. Field Current Voltage Resistor Correct answer: 2. Current The BJT is a current-controlled device
Three Terminal of Bipolar Junction Transistor (BJT) are: Base, Collector and Emitter Gate, Collector and Emitter Collector, Base, and Source Base, Gate & Collector Correct answer: 1. Base, Collector and Emitter Three terminals on BJT are Base, Collector & Emitter More MCQ on Basic Electronics