Explore topic-wise MCQs in Electronic Devices Circuits.

This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices Circuits knowledge and support exam preparation. Choose a topic below to get started.

1.

The output waveform of CLC filter is superimposed by a waveform referred to as_________

A. Square wave
B. Triangular wave
C. Saw tooth wave
D. Sine wave
Answer» D. Sine wave
Discussion
2.

What is the relation between time constant and load resistance?

A. They don’t depend on each other
B. They are directly proportional
C. They are inversely proportional
D. Cannot be predicted
Answer» D. Cannot be predicted
Discussion
3.

The advantages of a pi-filter is_________

A. low output voltage
B. low PIV
C. low ripple factor
D. high voltage regulation
Answer» D. high voltage regulation
Discussion
4.

For a given CLC filter, the operating frequency is 50Hz and 10µF capacitors used. The load resistance is 3460Ω with an inductance of 10henry. Calculate the ripple factor.

A. 0.165%
B. 0.142%
C. 0.178%
D. 0.321%
Answer» B. 0.142%
Discussion
5.

A single phase full wave rectifier makes use of pi section filter with 10µF capacitors and a choke of 10henry. The secondary voltage is 280V and the load current is 100mA. Determine the dc output voltage when f=50Hz.

A. 345V
B. 521V
C. 243V
D. 346V
Answer» E.
Discussion
6.

WHAT_IS_THE_RELATION_BETWEEN_TIME_CONSTANT_AND_LOAD_RESISTANCE??$

A. They don’t depend on each other
B. They are directly proportional
C. They are inversely proportional
D. Cannot be predicted
Answer» D. Cannot be predicted
Discussion
7.

The_output_waveform_of_CLC_filter_is_superimposed_by_a_waveform_referred_to_as_________$

A. Square wave
B. Triangular wave
C. Saw tooth wave
D. Sine wave
Answer» D. Sine wave
Discussion
8.

The advantages of a pi-filter is________?

A. low output voltage
B. low PIV
C. low ripple factor
D. high voltage regulation
Answer» D. high voltage regulation
Discussion
9.

The voltage in case of a full wave rectifier in a CLC filter is_________

A. V<sub>ϒ</sub> = I<sub>DC</sub>/2fC
B. V<sub>ϒ</sub> = I<sub>DC</sub> fC
C. V<sub>ϒ</sub> = I<sub>DC</sub>/fC
D. V<sub>ϒ</sub> = 2I<sub>DC</sub>fC
Answer» B. V<sub>‚âà√¨‚àö‚â†</sub> = I<sub>DC</sub> fC
Discussion
10.

The inductor is placed in the L section filter because_________

A. It offers zero resistance to DC component
B. It offers infinite resistance to DC component
C. It bypasses the DC component
D. It bypasses the AC component
Answer» B. It offers infinite resistance to DC component
Discussion
11.

For a given CLC filter, the operating frequency is 50Hz and 10µF capacitors used. The load resistance is 3460Ω with an inductance of 10henry. Calculate the ripple factor.$

A. 0.165%
B. 0.142%
C. 0.178%
D. 0.321%
Answer» B. 0.142%
Discussion
12.

A single phase full wave rectifier makes use of pi section filter with 10µF capacitors and a choke of 10henry. The secondary voltage is 280V and the load current is 100mA. Determine the dc output voltage when f=50Hz.$

A. 345V
B. 521V
C. 243V
D. 346V
Answer» E.
Discussion
13.

At f=50Hz, the ripple factor of CLC filter is_________

A. ϒ=5700RL / (LC<sub>1</sub>C<sub>2</sub>)
B. ϒ=5700/ (LC<sub>1</sub>C<sub>2</sub>R<sub>L</sub>)
C. ϒ=5700LC<sub>1</sub>/ (C<sub>2</sub>R<sub>L</sub>)
D. ϒ=5700C<sub>1</sub>C<sub>2</sub>/ (LR<sub>L</sub>)
Answer» C. ‚âà√¨‚àö‚â†=5700LC<sub>1</sub>/ (C<sub>2</sub>R<sub>L</sub>)
Discussion
14.

Major part of the filtering is done by the first capacitor in a CLC filter because _________

A. The capacitor offers a very low reactance to the ripple frequency
B. The capacitor offers a very high reactance to the ripple frequency
C. The inductor offers a very low reactance to the ripple frequency
D. The inductor offers a very high reactance to the ripple frequency
Answer» B. The capacitor offers a very high reactance to the ripple frequency
Discussion
15.

What is the number of capacitors and inductors used in a CLC filter?

A. 1, 2 respectively
B. 2, 1 respectively
C. 1, 1 respectively
D. 2, 2 respectively
Answer» C. 1, 1 respectively
Discussion