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.
- 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.
- 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