GATE ECE 1987 | GATE ECE Year Wise Previous Years Questions

GATE ECE 1987

MCQ (Single Correct Answer)

-0.6

A transmission line of pure resistive characteristic impedance is terminated with an unknown load. The measured value of VSWR on the line is equal to 2 and a voltage minimum point is found to be at the load. The load impedance is then

complex

Purely capacitive

Purely resistive

Purely inductive

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 4 English

GATE ECE 1987 Electromagnetics - Maxwell Equations Question 4 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 $${{{\mu _o}\,I} \over {2\,\pi }}\,\,\left( {{{{d_2}^2} \over {{d_1}^2}}} \right)$$

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