1
GATE ECE 1993
MCQ (Single Correct Answer)
+1
-0.3
For the logic circuit shown in Figure, the output is equal to GATE ECE 1993 Digital Circuits - Logic Gates Question 35 English
A
$$\overline A \,.\overline B .\overline C $$
B
$$\overline A \, + \overline B + \overline C $$
C
$$\overline {AB} + \overline {BC} + \overline A + \overline C $$
D
$$\overline {AB} + \overline {BC} $$
2
GATE ECE 1993
MCQ (Single Correct Answer)
+2
-0.6
A material is described by the following electrical parameters at a frequency of $$10$$ GHz is $$\sigma = {10^6}$$ mho/m, $$\mu = {\mu _0},$$ and $$ \in /{ \in _0} = 10.$$ The material at this frequency is considered to be $$\left( {{ \in _0} = {1 \over {36\,\,\pi }} \times {{10}^{ - 9}}\,\,F/m} \right)$$
A
a good conductor
B
a good dielectric
C
neither a good conductor nor a good dielectric
D
a good magnetic material
3
GATE ECE 1993
MCQ (Single Correct Answer)
+2
-0.6
Consider a transmission line of characteristic impedance 50 ohm. Let it be terminated at one end by ( + j50) ohm. The VSWR produced by it in the transmission line will be
A
+ 1
B
0
C
$$\infty $$
D
+ j
4
GATE ECE 1993
MCQ (More than One Correct Answer)
+2
-0.6
A plane wave is incident normally on a perfect conductor as shown in Fig. Here $$E_x^i,\,\,H_y^i$$ and $$\overrightarrow P {}^i$$ are electric field, magnetic field and Poynting vector respectively, for the incident wave. The reflected wave should have GATE ECE 1993 Electromagnetics - Uniform Plane Waves Question 52 English
A
$$E_x^r = - E_x^i$$
B
$$H_y^r = - H_y^i$$
C
$$\overrightarrow P {}^r = - \overrightarrow P {}^i$$
D
$$E_x^r = E_x^i$$
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