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GATE EC : Electromagnetics Champion Quiz 2
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Question 1
A satellite orbiting in 600 km orbit transmits 5 GHz frequency. The Doppler shift observed at the ground station, when the satelite is over head of the station is
Question 2
In a radar system, if the peak transmitted power ins increases by a factor of 16 and the antenna diameter is increased by a factor of 2, then the maximum range will increase by a factor of
Question 3
For a satellite transponder with a receiver antenna gain of 12 dB, an LNA gain of 10 dB, and equivalent noise temperature of 26 dBK-1, the G/Te is
Question 4
If C is a closed curve enclosing a surface S, then the magnetic field intensity 
, the current density 
and the electric flux density 
are related by
, the current density and the electric flux density are related by Question 5
Consider the following statements regarding an electrostatic field:
1. It is irrotational
2. It is solonoidal
3. It is static only form a macroscopic view point.
4. work done in moving a charge in the field from one point to another is independent of the path of movement
Which of these statements are correct?
1. It is irrotational
2. It is solonoidal
3. It is static only form a macroscopic view point.
4. work done in moving a charge in the field from one point to another is independent of the path of movement
Which of these statements are correct?
Question 6
Application of the method of images to a boundary value problem in electrostatics involves which one of the following?
Question 7
W1 is the electrostrostatic energy stored in a system of three equal point charge arranged in a line with 0.5 m separation between them. If w2 is the energy stored with 1 m separation between them, then one of the following is correct?
A. is the electrostatic energy stored in a system of three equal point charges arranged in a line with m separation between them. If W2 is the energy stored with 1 m separation between them, then which one of the following is correct?
A. is the electrostatic energy stored in a system of three equal point charges arranged in a line with m separation between them. If W2 is the energy stored with 1 m separation between them, then which one of the following is correct?
Question 8
For an 8 feet (2.4 m) parabolic disk antenna operating at 4 GHz, the minimum distance required for far field measurement is closest to
Question 9
The maximum range of a monostatic Radar is R. If a target having a Radar cross- section of 10m2 exists at R/2, what should be the target cross-section at 3R/2 to result in an equal signal strength at the Radar?
Question 10
Match List I (Electromagnetic Law) with List II (Differential Fotm) and select the correct answer using the code given below the lists:
List-I List-II
A. Ampere’s law 1.
B. Faraday’s law 2.
C. Gauss law 3.
D. Current continuity 4. equation
Codes :
A B C D
List-I List-II
A. Ampere’s law 1.
B. Faraday’s law 2.
C. Gauss law 3.
D. Current continuity 4. equation
Codes :
A B C D
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Oct 15ESE & GATE EC
