Power Electronics Daily Quiz #5

Rise time of scr depends on-

1 Gate current or rate of rise of gate current

2 Structure of scr

3 Load parameters

4 None

Spread time depends on-

1 Gate current or rate of rise of gate current

2 Structure of scr @

3 Load parameters

4 None

St1: Light triggering is more efficient and reliable for multiple scr.

St2: LASCR is used in HVDC application.

1 Both are correct and St2 is correct explanation of St1

2 Both are correct but St2 is not correct explanation of St1

3 St1 is correct but St2 is wrong 

4 St2 is correct but St1 is wrong

The advantage/s of pulse transformer is/are-

1 Low and high power circuits are isolated.

2 Has smaller size.

3 Less cost than normal transformer.

4 All

An inductor is connected in series with a diode to an alternating source. How long does the diode conduct?

1 90 degrees

2 180 degrees

3 270 degrees

4 360 degrees

A Capacitor is connected in series with a diode to an alternating source. How long does the diode conduct?

1 90 degrees

2 180 degrees

3 270 degrees

4 360 degrees

An inductor- capacitor combination connected in series with a diode to a dc source. How long does the diode conduct?

1 90 degrees

2 180 degrees

3 270 degrees

4 360 degrees