Basic Electronics (3110016) MCQs

MCQs of Diode theory and applications

Showing 41 to 50 out of 108 Questions
2 3 4 5 6 7
41.
A crystal diode is used as _______.
(a) An amplifier
(b) A rectifier
(c) An oscillator
(d) A voltage regulator
Answer:

Option (b)

42.
The DC resistance of a crystal diode is _____ its AC resistance.
(a) The same as
(b) More than
(c) Less than
(d) None of the above
Answer:

Option (c)

43.
An ideal crystal diode is one which behaves as a perfect ______ when forward biased.
(a) Conductor
(b) Insulator
(c) Resistance material
(d) None of the above
Answer:

Option (a)

44.
The ratio of reverse resistance and forward resistance of a germanium crystal diode is about ______.
(a) 1:1
(b) 100:1
(c) 1000:1
(d) 40000:1
Answer:

Option (d)

45.
The leakage current in a crystal diode is due to ________.
(a) Minority carriers
(b) Majority carriers
(c) Junction capacitance
(d) None of the above
Answer:

Option (a)

46.
If the temperature of a crystal diode increases, them leakage current _______.
(a) Remains the same
(b) Is increased
(c) Is decreased
(d) None of the above
Answer:

Option (c)

47.
The PIV rating of a crystal diode is ______ that of equivalent vacuum diode.
(a) The same as
(b) Lower than
(c) More than
(d) None of the above
Answer:

Option (b)

48.
If the doping level of a crystal diode is increased, the breakdown voltage _____.
(a) Remains the same
(b) Is increased
(c) Is decreased
(d) None of the above
Answer:

Option (c)

49.
The knee voltage of a crystal diode is approximately equal to ______.
(a) Applied voltage
(b) Breakdown voltage
(c) Forward voltage
(d) Barrier potential
Answer:

Option (d)

50.
When the graph between current through and voltage across a device is a straight line, the device is referred to as _______.
(a) Linear
(b) Active
(c) Nonlinear
(d) Passive
Answer:

Option (a)

Showing 41 to 50 out of 108 Questions
2 3 4 5 6 7