Power Electronics Quiz: Semiconductor Devices!
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This is a power electronics quiz about semiconductor devices! Semiconductors are devices in which one can control the flow of electricity, and they are used in most power electronics. Power electronics are devices that transmit electrical energy. Do you know how to connect different power electronic devices, and what makes them different from each other and their properties? This quiz will offer a chance to refresh your memory, do give it a try!
- 1.ON state power losses in a BJT are high compared to MOSFET
- A.
True
- B.
False
- 2.This device is a voltage-controlled device:
- A.
BJT
- B.
DIODE
- C.
MOSFET
- D.
DIAC
- 3.Example of current commutation:
- A.
Class B commutation
- B.
Class C commutation
- C.
Class D commutation
- D.
Class E commutation
- 4.For UJT triggered SCR in a half-wave rectifier:
- A.
We use same supply for main n firing ckt
- B.
Firing ckt requires dc supply
- C.
Scr is used in main ckt and ujt in firing ckt
- D.
All of the above
- 5.The reverse recovery is more in
- A.
General diode
- B.
Schottky diode
- C.
Zener diode
- D.
All of the above
- 6.Which of the following are fully controlled ac switches?
- A.
SCR
- B.
Diac
- C.
Triac
- D.
IGBT
- 7.This can operate at the high switching frequency.
- A.
BJT
- B.
MOSFET
- C.
TRIAC
- D.
IGBT
- 8.
Maximum possible firing angle using R firing ckt is:- A.
90 degrees
- B.
180 degrees
- C.
Depends on the main ckt
- D.
Both a & c
- 9.With this devise Parallel operation is not possible.
- A.
BJT
- B.
MOSFET
- C.
SCR
- D.
None of the above
- 10.MOSFET has a parasitic diode
- A.
Parallel to the mosfet
- B.
Anti parallel to mosfet
- C.
Depends on the construction
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