Analog Circuits-Power Supplies [GATE (Graduate Aptitude Test in Engineering) Electronics & CE (EC)]: Questions 1 - 4 of 7

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Question 1

Appeared in Year: 2018

Question MCQ▾

Consider the following circuits:

1) Integrating circuit

2) Active differentiation circuit

3) Notch type electrical filter.

Arrange the above circuit model in decreasing order of their complexity. (July)

Choices

Choice (4)Response

a.

1) , 2) , 3)

b.

3) , 2) , 1)

c.

1) , 3) , 2)

d.

2) , 3) , 1)

Edit

Question 2

Appeared in Year: 2014

Question Assertion-Reason▾

Assertion(Ꭺ)

In applications such as FM and FSK, VCO plays an important role. (December)

Reason(Ꭱ)

The frequency control is easily possible by varying d. c. voltage.

Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

b.

Ꭺ is true but Ꭱ is false

c.

Ꭺ is false but Ꭱ is true

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

Edit

Passage

Read the passage given below and answer the questions that follow:

Supply voltages changes because of poor regulation and filtering. For any given op-amp any change in the value of supply voltages results in a change in the input offset voltage, which in turn causes a change in the output offset voltage. The change in an op-amp՚s input offset voltage caused by variations in the supply voltage is specified on data sheets by a variety of terms: Input offset voltage sensitivity, power supply rejection ratio and supply power rejection ratio are some of them. All these terms are equivalent since they convey the same information.

Op-amp can work as difference amplifier and can be effectively used with feedback for many applications.

Question 3 (1 of 3 Based on Passage)

Appeared in Year: 2019

Question MCQ▾

What is the output voltage Vo of the following circuit? (June)

Illustration for Proximity Printing

Choices

Choice (4)Response

a.

-5 Va + 3 Vb

b.

-5 Va + 6 Vb

c.

-6 Va + 3 Vb

d.

-5 Va + 2.5 Vb

Edit

Question 4 (2 of 3 Based on Passage)

Appeared in Year: 2019

Question MCQ▾

The open-loop voltage gain of an operation amplifier is 2000. The noise level in the output without feedback is 102 mV. If negative feedback with is used, what will be the noise level in output? (June)

Choices

Choice (4)Response

a.

1.33 mV

b.

4 mV

c.

2 mV

d.

2.66 mV

Edit