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Analog Electronics
Diode and Its Applications
Diode Basics and Diode Circuit Analysis

Questions mapped to Diode Basics and Diode Circuit Analysis under Diode and Its Applications.

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Q#1 Diode and Its Applications GATE EE 2024 (Set 1) NAT +2 marks -0 marks

In the given circuit, the diodes are ideal. The current  through the diode  in milliamperes is ________ (rounded off to two decimal places).

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Q#2 Diode and Its Applications GATE EE 2023 (Set 1) MSQ +2 marks -0 marks

All the elements in the circuit shown in the following figure are ideal. Which of the following statements is/are true?

When switch  is , both  and  conducts and  is reverse biased.

When switch  is  conducts and both  and  are reverse biased.

When switch  is OFF,  is reverse biased and both  and  conduct.

When switch  is OFF,  conducts,  is reverse biased and  conducts.

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Q#3 Diode and Its Applications GATE EE 2020 (Set 1) MCQ +2 marks -0.66 marks

Consider the diode circuit shown below. The diodes D, obeys the current-voltage characteristic

where n>1, ,  is the voltage across the diode and  is the current through it. The circuit is biased so that voltage, V > 0 and current, I<0,  If you had to design this circuit to transfer maximum power from the current source  to a resistive load (not shown) at the output, what values  and  would you choose?

Small  and small

Large  and large

Small  and large

Large  and small

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Q#4 Diode and Its Applications GATE EE 2020 (Set 1) MCQ +2 marks -0.66 marks

A non-ideal diode is biased with a voltage of –0.03 V, and a diode current of  is measured. The thermal voltage is 26 mV and the ideality factor for the diode is 15/13. The voltage, in V, at which the measured current increases to  is closest to:

–0.02

–0.09

–1.50

–4.50

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Q#5 Diode and Its Applications GATE EE 2013 (Set 1) MCQ +2 marks -0.66 marks

A voltage  Volts is applied across YZ. Assuming ideal diodes, the voltage measured across WX in Volts, is

0 for all t

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Q#6 Diode and Its Applications GATE EE 2012 (Set 1) MCQ +1 mark -0.33 marks

The i-v characteristics of the diode in the circuit given below are

The current in the circuit is

10mA

9.3mA

6.67mA

6.2mA

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Q#7 Diode and Its Applications GATE EE 2010 (Set 1) MCQ +1 mark -0.33 marks

Assuming that the diodes in the given circuit are ideal, the voltage  is

4V

5V

7.5V

12.12V

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Q#8 Diode and Its Applications GATE EE 2009 (Set 1) MCQ +1 mark -0.33 marks

The following circuit has a source voltage Vs as shown in the graph. The current through the circuit is also shown.

The element connected between a and b could be

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Q#9 Diode and Its Applications GATE EE 2008 (Set 1) MCQ +1 mark -0.33 marks

The equivalent circuits of a diode, during forward biased and reverse biased conditions, are shown in the figure.

If such a diode is used in clipper circuit of figure given above, the output voltage  of the circuit will be

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Q#10 Diode and Its Applications GATE EE 2006 (Set 1) MCQ +1 mark -0.33 marks

What are the states of the three ideal diodes of the circuit shown in figure?

ON, OFF, OFF

OFF, ON, OFF

ON, OFF, ON

OFF, ON, ON

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Q#11 Diode and Its Applications GATE EE 2005 (Set 1) MCQ +1 mark -0.33 marks

Assume that and in Figure are ideal diodes. The value of current I is

0 mA

0.5 mA

1 mA

2 mA

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Q#12 Diode and Its Applications GATE EE 2004 (Set 1) MCQ +2 marks -0.66 marks

Assuming that the diodes are ideal in figure, the current in  is

8 mA

5 mA

0 mA

−3mA

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Q#13 Diode and Its Applications GATE EE 2000 (Set 1) MCQ +2 marks -0.66 marks

A diode whose terminal characteristics are related as , where  is the reverse saturation current and   is the thermal voltage , is biased at . Its dynamic resistance is:

25 ohms

12.5 ohms

50 ohms

100 ohms

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Q#14 Diode and Its Applications GATE EE 1999 (Set 1) MCQ +1 mark -0.33 marks

The mobility of an electron in a conductor is expressed in terms of

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Q#15 Diode and Its Applications GATE EE 1999 (Set 1) MCQ +1 mark -0.33 marks

As the temperature is increased, the voltage across a diode carrying a diode carrying a constant current

Increases

Decreases

Remains constant

May increase or decrease depending upon the doping levels in the junction

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Q#16 Diode and Its Applications GATE EE 1996 (Set 1) MCQ +1 mark -0.33 marks

The depletion region or space charge region or transition in a semiconductor p-n junction diode has

Electrons and holes

Positive ions and electrons

Positive ions and negative ions

Negative ions and holes

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