1
GATE ECE 2005
MCQ (Single Correct Answer)
+2
-0.6
Characteristic impedance of a transmission line is 50$$\Omega $$. Input impedance of the open-circuited line is $${Z_{oc}} = 100\, + \,j\,\,150\Omega .$$ When the transmission line is short-circuited the value of the input impedance will be
A
50 $$\Omega $$
B
100 + j 150 $$\Omega $$
C
7.69 + j 11.54 $$\Omega $$
D
7.69 - j 11.54 $$\Omega $$
2
GATE ECE 2005
MCQ (Single Correct Answer)
+2
-0.6
Voltage standing wave pattern in a lossless transmission line with characteristic impedance 50 $$\Omega $$ and a resistive load is shown in Fig. GATE ECE 2005 Electromagnetics - Transmission Lines Question 20 English The reflection coefficient is given by
A
- 0.6
B
- 1
C
0.6
D
0
3
GATE ECE 2005
MCQ (Single Correct Answer)
+1
-0.3
Refractive index of glass is 1.5. Find the wavelength of a beam of light with a frequency of $${10^{14}}$$ Hz in glass. Assume velocity of light is $$3\,\, \times \,{10^8}$$ m/s in vacuum.
A
3 $$\mu $$m
B
3mm
C
2 $$\mu $$m
D
1 $$\mu $$m
4
GATE ECE 2005
MCQ (Single Correct Answer)
+2
-0.6
Which one of the following does represent the electric field lines for the $$T{E_{02}}$$ mode in the cross-section of a hollow rectangular metallic waveguide?
A
GATE ECE 2005 Electromagnetics - Waveguides Question 29 English Option 1
B
GATE ECE 2005 Electromagnetics - Waveguides Question 29 English Option 2
C
GATE ECE 2005 Electromagnetics - Waveguides Question 29 English Option 3
D
GATE ECE 2005 Electromagnetics - Waveguides Question 29 English Option 4
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