Analog and Digital Electronics-Simple Diode Circuits [GATE (Graduate Aptitude Test in Engineering) Electrical Engineering (EE)]: Questions 1 - 4 of 12

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Question 1

Appeared in Year: 2013

Question MCQ▾

In the circuit shown below, the knee current of the ideal Zener diode is 10 mA. To maintain 5 V across , the minimum value of in and the minimum power rating of the Zener diode in mW respectively are

Zener Diode

Choices

Choice (4)Response

a.

125 and 125

b.

250 and 125

c.

250 and 250

d.

125 and 250

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Question 2

Appeared in Year: 2012

Question MCQ▾

In the circuit shown, an ideal switch S is operated at 100 kHz with a duty ratio of 50% . Given that is 1.6 A peak-to-peak and is 5 A dc, the peak current in S is

After the Switch S is Closed, the Circuit

Choices

Choice (4)Response

a.

5.0 A

b.

6.6 A

c.

5.8 A

d.

4.2 A

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Question 3

Appeared in Year: 2013

Question MCQ▾

The input impedance of the permanent magnet moving coil (PMMC) voltmeter is infinite. Assuming that the diode shown in the figure below is ideal, the reading of the voltmeter in Volts is

Permanent Magnet Moving Coil

Choices

Choice (4)Response

a.

2.23

b.

4.46

c.

3.15

d.

0

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Question 4

Appeared in Year: 2021

Question Numeric Answer▾

The waveform shown in solid line is obtained by clipping a full-wave rectified sinusoid (shown dashed) . The ratio of the RMS value of the full-wave rectified waveform to the RMS value of the clipped waveform is ________. (Round off to 2 decimal places.)

The Waveform Shown in Solid Line
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