MCQs

If PIV rating of a diode is exceeded The diode behaves like a Zener diode The diode conducts poorly The diode is destroyed None of these Correct answer: 3. The diode is destroyed

A crystal diode uses which characteristic for rectification Forward Forward or Reverse Reverse None of these Correct answer: 1. Forward

The forward voltage drop across a silicon diode is around 0.7 V 2.5 V 3 V 7.75 V Correct answer: 1. 0.7 V

The ratio of reverse resistance and forward resistance of a germanium crystal diode is around 0.0423611111111111 4.16736111111111 41.6673611111111 FALSE

If the graph between current through and voltage across a device is straight line, the device is referred to as Active device Linear device Nonlinear device Passive device Correct answer: 2. Linear device

The crystal diode is employed as A Rectifier A Voltage Regulator An Amplifier An Oscillator Correct answer: 1. A Rectifier

The reverse current in a diode is of the order of µA A kA MA Correct answer: 1. µA

The DC resistance of a crystal diode is Less than ac resistance More than ac resistance The same as its ac resistance none of these Correct answer: 1. Less than ac resistance

The most important consideration when a crystal diode is used as a rectifier is its Doping Level Forward Characteristic PIV Rating Reverse Characteristic Correct answer: 3. PIV Rating

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