GATE ECE 1987 | GATE ECE Year Wise Previous Years Questions

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GATE ECE 1987

MCQ (Single Correct Answer)

-0.6

For an electromagnetic wave incident from one medium to a second medium, total reflection takes place when

The angle of incidence is equal to the Brewster angle with E field perpendicular to the plane of incidence.

The angle of incidence is equal to the Brewster angle with E field parallel to the plane of incidence.

The angle of incidence is equal to the critical angle with the wave moving from the denser medium to a rarer medium.

The angle of incidence is equal to the critical angle with the wave moving from a rarer medium to a denser medium.

GATE ECE 1987

MCQ (Single Correct Answer)

-0.6

An electrostatic field is said to be conservative when

The divergence of the field is equal to zero.

The curl of the field is equal to zero.

The curl of the field is equal to $$ - {{\partial \,B} \over {\partial \,t}}$$.

The Laplacian of the field is equal to $$\mu \,\,\varepsilon {{{\partial ^2}\,E} \over {\partial \,{t^2}}}$$.

GATE ECE 1987

MCQ (Single Correct Answer)

-0.6

Two long parallel wires in free space are separated by a distance R and carry currents of equal magnitude but opposite in direction. At any general point, the Z-component of GATE ECE 1987 Electromagnetics - Maxwell Equations Question 6 English

GATE ECE 1987 Electromagnetics - Maxwell Equations Question 6 English

The magnetic vector potential is $${{{\mu _o}\,I} \over {4\,\pi }}\,\ell \,n\left( {{{{d_2}^2} \over {{d_1}^2}}} \right)$$

The magnetic induction is $${{{\mu _o}\,I} \over {2\,\pi }}\,\,\left( {{{{d_2}} \over {{d_1}}}} \right)$$

The magnetic induction is zero

The magnetic vector potential is $${{{\mu _o}\,I} \over {2\,\pi }}\,\,\left( {{{{d_2}^2} \over {{d_1}^2}}} \right)$$

GATE ECE 1987

Subjective

-0

An electric field is given by $$\overrightarrow E = \overrightarrow a {}_x\,{\rm A}\,\,\sin \,\beta ySin\,\,\omega t$$ is present in a charge free medium infinite in extent

(a) Determine the associated magnetic field.
(b) What type of wave does the above field represent?

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