Electronics and Communication Engineering - Exam Questions Papers
Exercise :: Exam Questions Papers - Exam Paper 16
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.
A. Both A and R are individually true and R is the correct explanation of A B. Both A and R are individually true but R is not the correct explanation of A C. A is true but R is false D. A is false but R is true
Answer: Option B
Explanation:
2.
At 20 GHz , the gain of a parabolic dish antenna of 1 meter diameter and 70% efficiency is
Answer: Option C
Explanation:
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?
Answer: Option A
Explanation:
4.
Given the transfer function
Answer: Option A
Explanation:
5.
The output corresponding to the figure shown below is :
Answer: Option C
Explanation:
