1
GATE ECE 2007
MCQ (Single Correct Answer)
+2
-0.6
In the digital-to-Analog converter circuit shown in the figure below,
$${V_{R\,}}\, = \,10V$$ and $$R\, = \,10k\Omega $$ GATE ECE 2007 Digital Circuits - Analog to Digital and Digital to Analog Converters Question 5 English

The current i is

A
$$31.25\,\mu {\rm A}$$
B
$$62.5\,\mu {\rm A}$$
C
$$125\,\mu {\rm A}$$
D
$$250\,\mu {\rm A}$$
2
GATE ECE 2007
MCQ (Single Correct Answer)
+2
-0.6
In the digital-to-Analog converter circuit shown in the figure below,
$${V_{R\,}}\, = \,10V$$ and $$R\, = \,10k\Omega $$ GATE ECE 2007 Digital Circuits - Analog to Digital and Digital to Analog Converters Question 4 English

The voltage V0 is

A
-0.781V
B
-1.562V
C
-3.125V
D
-6.250V
3
GATE ECE 2007
MCQ (Single Correct Answer)
+1
-0.3
A plane wave of wavelength $$\lambda $$ is traveling in a direction making an angle $${{{30}^ \circ }}$$ with positive $$x$$-axis and $${{{90}^ \circ }}$$ with positiv $$y$$-axis. The $$\overrightarrow E $$ field of the plane wave can be represented as ($${E_0}$$ is a constant)
A
$$\vec E = \widehat y\,\,{E_0}{\mkern 1mu} {e^{j\left( {\omega t - {{\sqrt 3 {\kern 1pt} \pi } \over \lambda }x - {\pi \over \lambda }z} \right)}}$$
B
$$\vec E = \widehat y\,\,{E_0}{\mkern 1mu} {e^{j\left( {\omega t - {\pi \over \lambda }x - {{\sqrt 3 {\kern 1pt} \pi } \over \lambda }z} \right)}}$$
C
$$\vec E = \widehat y\,\,{E_0}{\mkern 1mu} {e^{j\left( {\omega t + {{\sqrt 3 {\kern 1pt} \pi } \over \lambda }x + {\pi \over \lambda }z} \right)}}$$
D
$$\vec E = \widehat y\,\,{\mkern 1mu} {E_0}{\mkern 1mu} {e^{j\left( {\omega t - {\pi \over \lambda }x + {{\sqrt 3 {\kern 1pt} \pi } \over \lambda }z} \right)}}$$
4
GATE ECE 2007
MCQ (Single Correct Answer)
+2
-0.6
A load of 50 $$\Omega $$ is connected in shunt in a 2-wire transmission line of $$Z_0$$ = 50 $$\Omega $$ as shown in the Fig. The 2-port scattering parameter matrix (S-matrix) of the shunt element is GATE ECE 2007 Electromagnetics - Transmission Lines Question 14 English
A
$$\left[ {\matrix{ { - {1 \over 2}} & {{1 \over 2}} \cr {{1 \over 2}} & { - {1 \over 2}} \cr } } \right]$$
B
$$\left[ {\matrix{ 0 & 1 \cr 1 & 0 \cr } } \right]$$
C
$$\left[ {\matrix{ { - {1 \over 3}} & {{2 \over 3}} \cr {{2 \over 3}} & { - {1 \over 3}} \cr } } \right]$$
D
$$\left[ {\matrix{ {{1 \over 4}} & { - {3 \over 4}} \cr { - {3 \over 4}} & { - {1 \over 4}} \cr } } \right]$$
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