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Placement Unit ET Mock Test - 28 July, 2019

The document contains the answer key for an ET mock test conducted on 28th July, 2019. It lists 11 multiple choice or numerical questions along with their answers. The answers include choices like B, x⨁y⨁z, an explanation of the output being a ramp with an infinite time constant, and explanations of exponential signals for different circuits.

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Parekh Prashil Bhaveshbhai
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39 views3 pages

Placement Unit ET Mock Test - 28 July, 2019

The document contains the answer key for an ET mock test conducted on 28th July, 2019. It lists 11 multiple choice or numerical questions along with their answers. The answers include choices like B, x⨁y⨁z, an explanation of the output being a ramp with an infinite time constant, and explanations of exponential signals for different circuits.

Uploaded by

Parekh Prashil Bhaveshbhai
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Placement Unit

ET Mock Test || 28th July, 2019

Answer Key
1.

2. B

3. x⨁y⨁z

4. C

5.

6.
7.

8. Output will be Ramp. Time constant of infinity.

9. If we assume the switch to be open from -infinity to zero, Va for 0- will be 1 V and
iL=iR will be 1 uA. Then for t=0+, Va will go to 1 uV as iL should not change
instantly. For t>0, it will be upward exponential towards 1v.

10. Va = Vb =0

11. First order rising exponential from zero to Io*R with a Time constant of 2*R*C.

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