MCQs

The crystal diode has One Pn Junction Three Pn Junctions Two Pn Junctions None of these Correct answer: 1. One Pn Junction

If doping level of a crystal diode is increased, the breakdown voltage Is decreased Is increased Remains the same None of these Correct answer: 1. Is decreased

A series resistance is connected in the Zener circuit in order to Properly forward bias the Zener Properly reverse bias the Zener Protect the Zener None of these Correct answer: 3. Protect the Zener

The Zener diode is A Linear device A Non-Linear device An Amplifying device None of these Correct answer: 2. A Non-Linear device

A crystal diode has forward resistance of order of KΩ MΩ None of these Ω Correct answer: 4. Ω

The most extensively used rectifier is Bridge Full-Wave Rectifier Centre-Tap Full-Wave Rectifier Half-Wave Rectifier None of these Correct answer: 1. Bridge Full-Wave Rectifier

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