1
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
2
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
3
GATE ECE 2005
MCQ (Single Correct Answer)
+2
-0.6
Two identical and parallel dipole antennas are kept apart by a distance $$\lambda /4$$ of in the H-plane. They are fed with equal currents but the right most antenna has a phase shift of +90°. The radiation pattern is given as
A
GATE ECE 2005 Electromagnetics - Antennas Question 37 English Option 1
B
GATE ECE 2005 Electromagnetics - Antennas Question 37 English Option 2
C
GATE ECE 2005 Electromagnetics - Antennas Question 37 English Option 3
D
GATE ECE 2005 Electromagnetics - Antennas Question 37 English Option 4
4
GATE ECE 2005
MCQ (Single Correct Answer)
+1
-0.3
The primary reason for the widespread use of Silicon in semiconductor device technology is
A
abundance of Silicon on the surface of the Earth.
B
larger bandgap of Silicon in comparison to Germanium.
C
favorable properties of Silicon-dioxide (SiO2)
D
lower melting point
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