Electronics and Communication Engineering - Exam Questions Papers
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- Exam Questions Papers - Exam Paper 2
1.
Assertion (A): The expression E = - ΔV, where E is the electric field and V is the potential is not valid for time varying fields.
Reason (R): The curl of a gradient is identically zero.
2.
At 20 GHz , the gain of a parabolic dish antenna of 1 meter diameter and 70% efficiency is
3.
Hysteresis loss in a transformer working at 220 V and at a frequency of 50 Hz is 100 W. When the transformer is operated at 220 V and at a frequency of 100 Hz, what is the hysteresis loss?
4.
Given the transfer function
Polar plot will be of shape.

Polar plot will be of shape.
5.
The output corresponding to the figure shown below is :


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