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
0 h : 0 m : 1 s