GATE (Graduate Aptitude Test in Engineering) Instrumentation: Questions 65 - 68 of 85

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Question 65

Appeared in Year: 2014

Question

MCQ▾

Assuming an ideal op-amp in linear range of operation, the magnitude of the transfer impedance in of the current to voltage converter shown in the figure is ________.

The Ideal Operational Amplifier in a Linear Range of Operation

Choices

Choice (4)Response

a.

0.4

b.

0.7

c.

0.5

d.

0.6

Question 66

Appeared in Year: 2014

Question

MCQ▾

In the circuit shown in the figure, initially the capacitor is uncharged. The switch ‘S’ is closed at . Two milliseconds after the switch is closed, the current through the capacitor (in mA) is________.

Switch to Control the Charging & Discharging of the Capacitor

Choices

Choice (4)Response

a.

4.54

b.

3.53

c.

2.52

d.

1.51

Question 67

Appeared in Year: 2014

Question

MCQ▾

In the figure, transistors and have identical characteristics. Of transistor is the voltage is high enough to put in saturation. Voltage of transistors is 0.7V. The value of in V is________.

The Three Transistors with Resistors with Voltage Supply

Choices

Choice (4)Response

a.

3.45

b.

1.24

c.

5.68

d.

6.89

Question 68

Appeared in Year: 2013

Question

MCQ▾

In the feedback network shown below, if the feedback factor K is increased, then the

The Feedback Network Shown Above the Increase in the Feedback

Choices

Choice (4)Response

a.

Input impedance increases and output impedance also increases

b.

Input impedance decreases and output impedance increases

c.

Input impedance decreases and output impedance also decreases

d.

Input impedance increases and output impedance decreases

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