Q.1
A diode rectifier with a C filter will have average output voltage _______ than that obtained by a rectifier without the C filter.
  • a) lower than
  • b) higher than
  • c) same as
  • d) none of the mentioned
Q.2
An inductor filter connected in series with a resistive load provides a
  • a) smoothing of the output voltage waveform
  • b) smoothing of the input voltage waveform
  • c) smoothing of the output current waveform
  • d) smoothing of the input current waveform
Q.3
In the below given configuration, L is connected as a filter across the R load.
Questionpower-electronics-questions-answers3.jpg
  • a) 2Vm/R
  • b) 2Vm/πR
  • c) Vm/πR
  • d) Vm/R
Q.4
The current ripple factor (CRF) is the ratio of
  • a) Average value/RMS value
  • b) RMS value/Average value
  • c) Average value/Maximum value
  • d) Maximum value/RMS value
Q.5
In case of an L filter, the ripple current increases with
  • a) increase in Load
  • b) decrease in Load
  • c) increase in the value of L
  • d) ripple current never increases
Q.6
In case of a C filter, if R (load resistance) is increased
  • a) ripple factor is reduced
  • b) ripple factor is increased
  • c) ripple factor is not affected
  • d) increases noise in the circuit
Q.7
When a certain type of filter is connected across the R load, of a full wave bridge diode biased rectifier the following output current waveform is obtained.
Questionpower-electronics-questions-answers7.jpg
  • a) L filter
  • b) C filter
  • c) LC filter
  • d) None of the above mentioned
Q.8
C filters are suitable for ___________ load resistances and L filters are suitable for _____________ load resistances.
  • a) low, low
  • b) high, high
  • c) high, low
  • d) low, high
Q.9
An LC filter will have ripple factor value___________ (For the same value of L & C)
  • a) lower than that obtained by L filter but higher than that obtained by C filter
  • b) lower than that obtained by C filter but higher than that obtained by L filter
  • c) lower than that obtained by either L or C filter
  • d) higher than that obtained by either L or C filter
Q.10
In a single-phase full wave rectifier ___________ order harmonics are the most dominant
  • a) first
  • b) second
  • c) third
  • d) fourth
0 h : 0 m : 1 s