A. high thermal conductivity
B. large surface area
C. high melting point
D. All of these
A. Turn on
B. Not turn on
C. Turn on if inductance is removed
D. Turn on if pulse frequency us increased to two times
A. Do not contribute to the collector current
B. Result in net current flow component into the base
C. Contribute to the collector current
D. Only (a) and (b)
E. Only (b) and (c)
A. There is always a path for the dc current independent of the ac line
B. There is always a path for the ac current independent of the ac line
C. There is always a path for the dc current dependent of the ac line
D. There is always a path for the ac current independent of the ac line
A. 60 degree
B. 90 degree
C. 120 degree
D. 150 degree
A. 600 V/µs
B. 800 V/µs
C. 1200 V/µs
D. 1000 V/µs
A. PNPN device
B. A combination of diac and triac
C. A set of SCRs
D. A set if SCR,diac and triac