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Exam Details

ESE (IES)Electronics & Communication Engineering P2 2014

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Questions 120
Duration 180 mins
Package ESE & GATE EC - Previous Year Papers

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Difficulty distribution

Medium 87 72.5%
Easy 20 16.7%
Hard 13 10.8%

Question type distribution

Multiple Choices 120 100%

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Sample questions from this paper

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1
2014 · Unclassified
ESE (IES)Electronics & Communication Engineering P2 2014
In a geostationary satellite communication system, a message signal is transmitted from an earth station via an uplink to a satellite amplified in a transponder on board the satellite and then transmitted via a downlink to another earth station. The most popular frequency band for satellite communication is
A
16 MHz for the uplink and 14 MHz fir the downlink
B
4 GHz for the uplink and 6 GHz for the downlink
C
6 GHz for the uplink and 4 GHz for the downlink
D
10 GHz for the downlink and 8 GHz for the uplink
2
2014 · Unclassified
ESE (IES)Electronics & Communication Engineering P2 2014
As per WARC-1979 allocation, commercial communication satellites use bandwidth of
A
4 MHz
B
40 MHz
C
200 MHz
D
500 MHz
3
2014 · Unclassified
ESE (IES)Electronics & Communication Engineering P2 2014
Range resolution in RADAR is determined by
A
The radiated power
B
The bandwidth of transmitted pulse
C
The center frequency of RADAR
D
The antenna size
4
2014 · Unclassified
ESE (IES)Electronics & Communication Engineering P2 2014
In satellite communication, faraday rotation is caused by
A
Plasma frequency
B
Earth’s magnetic field
C
lonospheric reflections that occur multiple times
D
Non-Gaussian nature of uplink noise when received in the downlink channel
5
2014 · Unclassified
ESE (IES)Electronics & Communication Engineering P2 2014
What will be the total modulation index if a wave is amplitude modulated by three sine waves with modulation indices of 25%, 50% and 75%?
A
Mt = 1.5
B
Mt = 0.93
C
Mt = 1
D
Mt = 1.22
6
2014 · Unclassified
ESE (IES)Electronics & Communication Engineering P2 2014
Boosting of higher frequency at the transmitter is done by using
A
De-emphasis
B
AGC circuit
C
Pre-emphasis
D
Armstrong method