Electronics and Experimental Methods (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 1 - 3 of 50

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Question number: 1

» Electronics and Experimental Methods » A-D and D-a Converters

Appeared in Year: 2013

MCQ▾

Question

If the analog input to an 8 – bit successive approximation ADC is increased from 1.0 V to 2.0 V, then the conversion time will – (June)

Choices

Choice (4) Response

a.

Remain unchanged

b.

Double

c.

Decrease to half its original value

d.

Increase four times

Question number: 2

» Electronics and Experimental Methods » Digital Techniques and Applications » Registers

Appeared in Year: 2013

MCQ▾

Question

The insulation resistance R of an insulated cable is measured by connecting it in parallel with a capacitor C, a voltmeter, and battery B as shown. The voltage across the cable dropped from 150 V to 15 V, 1000 seconds after the switch S is Equation then its insulation resistance is approximately, (June)

Circuit diagram consist of R and C

Circuit Diagram Consist of R and C

In figure the insulating resistance R of an insulated cable is measured by connecting it in parallel with a capacitor C, a voltmeter and battery B.

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 3

» Electronics and Experimental Methods » Device Characteristics

Appeared in Year: 2013

MCQ▾

Question

A silicon transistor with built-in voltage 0.7 V is used in the circuit shown, with Equation andEquation . Which of the following figures correctly represents the load line and the quiescent Q point? (June)

A silicon transistor

A Silicon Transistor

In figure a silicon transistor with built in voltage 0.7 V is shown

Choices

Choice (4) Response

a.

 Output characteristic: Choice A

Output Characteristic: Choice a

In figure out characteristic with DC load line

b.

 Output characteristic: Choice B

Output Characteristic: Choice B

In figure out characteristic with DC load line

c.

 Output characteristic: Choice C

Output Characteristic: Choice C

In figure out characteristic with DC load line

d.

Output characteristic: Choice D

Output Characteristic: Choice D

In figure out characteristic with DC load line

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