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Pn Junction Diode
Quiz 2
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Q.1
The reverse saturation current in a PN Junction diode is only due to
majority carriers
minority carriers
acceptor ions
donor ions
Q.2
Which of the below mentioned statements is false regarding a p-n junction diode?
Diodes are rectifying devices
Diodes are unidirectional devices
Diodes have three terminals
Diode are uncontrolled devices
Q.3
Which of the following is true in case of a forward biased p-n junction diode?
The positive terminal of the battery sucks electrons from the p-region
The positive terminal of the battery injects electrons into the p-region
The negative terminal of the battery sucks electrons from the p-region
None of the above mentioned statements are true
Q.4
Which of the following results when the equilibrium established in a semiconductor?
Restrain the process of diffusion
Electric field very high
Restrain the process of diffusion and electric field very high
None of these
Q.5
Initially, the p-type carriers are located to the____________of the semiconductor
Right
Left
Middle
TopTop
Q.6
If the voltage of the potential barrier is VA voltage V is applied to the input, at what moment will the barrier disappear?
V< V0
V=V0
V> V0
V<< V0
Q.7
During reverse bias, a small current develops known as
Forward current
Reverse current
Reverse saturation current
Active current
Q.8
In a PN junction the potential barrier is due to the charges on either side of the junction, these charges are
Fixed donor and acceptor ions
Majority carriers
Minority carriers
Both Majority carriers and Minority carriers
Q.9
What is ripple factor for full wave bridge rectifier
0.482
1.21
Q.10
What is the efficiency of full wave rectifier
80.2%
81.2%
Q.11
What is the efficiency of half wave rectifier
0.482%
40.6%
Q.12
In full wave rectifier , for the positive half cycle of AC the diode D1 is____ & diode D2 is ____
Forward & Reverse
Reverse & Forward
Q.13
Half Wave Rectifier circuit consists of a___
one diode
two diode
4 diode
Q.14
If an external D.C voltage is connected in such a way that the positive terminal is connected to p-region and the negative terminal is connected to n-region , then the diode is said to be in
Forward
Reverse
No
Forward and Reverse
Q.15
The value of leakage current in reverse biased condition
10mA
μA
Q.16
Applying External d.c. voltage to any electronic device is called
Turning On
Turning Off
Biasing
Amplifying
Q.17
The depletion layer in reverse biased condition
wider
Narrow
Q.18
______ is used as constant voltage source.
Zener diode
photo diode
Q.19
Resistors, capacitors, and inductors are example of ____components
Active
Passive
Q.20
Diode is given its name because it's a combination of ____
1 electrode
2 electrodes
3 electrodes
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