Q.1 Rectification efficiency of a Half Wave Rectifier without filter is nearly equal to?
A) 51 %
B) 61 %
C) 71 %
D) 41 %
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
Sources