PART A(10*2=20)
1.
Define
holding and latching current.
2.
What
are advantages of GTO over SCR ?
3.
What
are parameters involved in switching loss of power device
4.
What
are the methods to turn on the SCR?
5.
What
is overlap angle?
6.
Mention
some application of converters.
7.
What
is dual converter?
8.
What
are the performance parameters of phase controlled rectifiers.
9.
Compare
MOSFET and BJT
10. Define snubber circuit.
PART
B (16*5=80)
11. Explain the structure and
different modes of operation with the characteristics of traic.
12. Explain the switching characteristics
of SCR in detail
13. Discuss in any two forced
commutation in detail.
14. Explain the operation of single
phase fully controlled converter with R-load .Derive for average output voltage
15. Explain the operation principle
of single phase dual converter.
0 Comments