GATE ECE 1995 | GATE ECE Year Wise Previous Years Questions

GATE ECE 1995

MCQ (Single Correct Answer)

-0.3

The electric field strength at a distance point, P, due to a point charge, +q, located at the origin, is 100 $$\mu $$V/m. If the point charge is now enclosed by a perfectly conducting metal sheet sphere whose center is at the origin, then the electric field strength at the point P outside the sphere becomes.

Zero

100 $$\mu $$V/m

-100 $$\mu $$V/m

50 $$\mu $$V/m

GATE ECE 1995

MCQ (Single Correct Answer)

-0.3

An antenna when radiating, has a highly directional radiation pattern. When the antenna is receiving its radiation pattern

is more directive

is less directive

is the same

exhibits no directivity at all

GATE ECE 1995

MCQ (Single Correct Answer)

-0.3

The intrinsic impedance of a lossy dielectric medium is given by

$${{j\omega \mu } \over \sigma }$$

$${{j\omega \in } \over \mu }$$

$$\sqrt {{{j\omega \mu } \over {\sigma + j\omega \in }}} $$

$$\sqrt {{\mu \over \in }} $$

GATE ECE 1995

MCQ (Single Correct Answer)

-0.3

Copper behaves as a

conductor always.

conductor or dielectric depending on the applied electric field strength.

conductor or dielectric depending on the frequency.

conductor or dielectric depending on the electric current density.

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