Question: The d.c. resistance of a crystal diode is ______________ its a.c. resistance?

• 1. the same as
• 2. more than
• 3. less than
• 4. none of the above

Question: The forward voltage drop across a silicon diode is about _______________?

• 1. 2.5 V
• 2. 3 V
• 3. 10 V
• 4. 0.7 V

Question: A crystal diode has______________?

• 1. one pn junction
• 2. two pn junctions
• 3. three pn junctions
• 4. none of the above

Question: If the doping level in a crystal diode is increased, the width of depletion layer_____________?

• 1. remains the same
• 2. is decreased
• 3. in increased
• 4. none of the above

Question: A crystal diode is a ________________device?

• 1. non-linear
• 2. bilateral
• 3. linear
• 4. none of the above

Question: When the graph between current through and voltage across a device is a straight line, the device is referred to as _______________?

• 1. linear
• 2. active
• 3. nonlinear
• 4. passive

Question: The PIV rating of a crystal diode is _______________ that of equivalent vacuum diode.

• 1. the same as
• 2. lower than
• 3. more than
• 4. none of the above

Question: The leakage current in a crystal diode is due to _________________?

• 1. minority carriers
• 2. majority carriers
• 3. junction capacitance
• 4. none of the above

Question: The reverse current in a diode is of the order of _____________?

• 1. kA
• 2. mA
• 3. μA
• 4. A

Question: In deriving ac equivalent circuit for an amplifier circuit, we short circuit___________?

• 1. all resistors
• 2. all transistors
• 3. all inductors
• 4. all capacitors