The disadvantage of a half-wave rectifier is that the Components are expensive Diodes must have a higher power rating Output is difficult to filter None of these Correct answer: 3. Output is difficult to filter
A zener diode is employed as A Multivibrator A Rectifier A Voltage Regulator An Amplifier Correct answer: 3. A Voltage Regulator
Which of following rectifiers has the lowest forward resistance Gas Tube Solid State Vacuum Tube None of these Correct answer: 2. Solid State
If temperature of crystal diode increases then leakage current Becomes zero Decreases Increases Remains the same Correct answer: 3. Increases
The leakage current in a crystal diode is due to which of following Junction Capacitance Majority Carriers Minority Carriers None of these Correct answer: 3. Minority Carriers
Ammeter is used to measure power in a three-phase load FALSE TRUE Correct answer: 1. FALSE
If arrow of crystal diode symbol is positive with respect to bar, then diode is Either forward or reverse Forward biased Reverse biased None of these Correct answer: 2. Forward biased
For a ∆-connected generator, there is a 120° difference between each line current and the nearest phase current FALSE TRUE Correct answer: 1. FALSE
When crystal current diode current is large the bias is Forward Inverse Poor Reverse Correct answer: 1. Forward
Polyphase generators generate simultaneous multiple sinusoidal voltages that are separated by Constant currents Constant frequencies Constant phase angles Constant voltages Correct answer: 3. Constant phase angles