IndiaBIX

Electronics and Communication Engineering - Electronic Devices and Circuits

Exercise : Electronic Devices and Circuits - Section 3
26.
Zinc oxide is a non-linear resistance.
True
False
Answer: Option
Explanation:

It is used in lightning arresters due to its non-linear resistance property.

27.
For the three coupled coils shown in figure, KVL equation is
Answer: Option
Explanation:

M12 is positive while M23 and M13 are negative because of dots shown in figure.

28.
Figure shows a dc circuit. The Thevenin's equivalent circuit at terminals a - b is
not feasible
Answer: Option
Explanation:

A current source with series resistance is not feasible.

29.
The dependent current source shown in given figure.
delivers 80W
absorbs 80W
deliver 40W
absorbs 40W
Answer: Option
Explanation:

P = I2.R 16 x 5 80 W,

Voltage source and current source both are in opposite direction.

30.
The current flowing through the resistance R in the circuit in the figure has the form 2 cos 4t, where R is
(0.18 + j0.72)
(0.46 + j1.90)
- (0.18 + j1.90)
(0.23 - 0.35 j)
Answer: Option
Explanation:

Inductor is not given, hence ignoring the inductance. Let I1 and I2 are currents in the loop then

.

Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers