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Electronics and Communication Engineering - Power Electronics

Exercise : Power Electronics - Section 4
26.
In a stud mounted SCR, the stud is
in thermal contact with heat sink
insulated from heat sink
in electrical and thermal contact with heat sink
in either electrical or thermal contact with heat sink
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
In pulse width modulation of chopper
T is kept constant and Ton is varied
Ton is kept constant T is varied
both T and Ton are varied
either T or Ton is varied
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
In a full bridge inverter, the waveshape of load current depends on
relative values of load parameters R, L and C
relative values of load parameters R and L
relative values of load parameters L and C
gating frequency
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
The characteristics of which device has peak point and valley point
SCR
PUT
SCS
Shockley diode
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
In a step down chopper using time ratio control, the input voltage is V and duty cycle is a. The load is purely resistive having resistance R. The average and rms load currents are
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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