Q.1 How many diodes and capacitor are used in voltage doubler circuit?
A) 1
B) 2
C) 4
D) 8
Ans : D
Q.2 When the temperature of a doped semiconductor is increased, its conductivity?
A) Decreases
B) Increases
C) Does not change
D) Increases or decreases depending on whether it is p or n-type
Ans : B
Q.3 The mean value of half wave rectified sine wave is?
A) 0.707 im
B) 0.66 im
C) 0.5 im
D) 0.318 im
Ans : D
Q.4 The form factor for half wave rectified sine wave is?
A) 1.0
B) 1.11
C) 1.44
D) 1.57
Ans : D
Q.5 The breakdown mechanism in a lightly doped p-n junction under reverse biased condition is called?
A) Avalanche breakdown
B) Zener breakdown
C) Breakdown by tunneling
D) High voltage breakdown
Ans : A
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