191. In BJT, the forward biased base emitter junction inject holes from base to emitter, the holes_______?
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)

192. In BJT, switching losses occurs___________?
A. Only at turn – on
B. Only at turn – off
C. Both at turn on and off
D. None of these

193. In radiative coupling, the emitter radiation field_____________?
A. Decays as 1 / R, where R is the separation distance between the emitter and the receptor
B. Decays as R, where R is the separation distance between the emitter and the receptor
C. Decays as 1 / 2 R, where R is the separation distance between the emitter and the receptor
D. Decays as 2R, where R is the separation distance between the emitter and the receptor

194. Choppers is a_______________?
A. AC – DC converters
B. AC – AC converters
C. DC – AC converters
D. DC – DC converters

195. The effects of EMI can be reduced by____________?
A. Suppressing emissions
B. Reducing the efficiency of the coupling path
C. Reducing the susceptibility of the receptor
D. All of these