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Exam Details

ISROElectronics & Communication Engineering 2014

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Questions 80
Duration 180 mins
Package ESE & GATE EC - Previous Year Papers

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Difficulty distribution

Medium 60 75%
Hard 13 16.3%
Easy 7 8.8%

Question type distribution

Multiple Choices 80 100%

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Sample questions from this paper

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1
2014 · Unclassified
ISROElectronics & Communication Engineering 2014
In the circuit shown below, switch and are in open and close position respectively for long time. At t = , switch is closed and switch is opened. What would be the current through immediately after the transition of switches?
A
0 mA
B
1 mA
C
2 mA
D
0.5 mA
2
2014 · Unclassified
ISROElectronics & Communication Engineering 2014
A digital board has a unipolar square clock of 250MHz. If the clock on the board at all places should have all the harmonic components which have more than 10 % of DC value, the board has to be designed for at least
A
250 MHz
B
750 MHz
C
1250 MHz
D
2500 MHz
3
2014 · Unclassified
ISROElectronics & Communication Engineering 2014
A switch is connected in between a 12 V battery and an uncharged capacitor and a 1 k resistor. At the time instant when the switch is closed, the voltage across the capacitor is
A
6 V
B
12 V
C
0 V
D
24 V
4
2014 · Unclassified
ISROElectronics & Communication Engineering 2014
Which type of timing violation will occur, If a digital IC is operated at clock frequency which higher than its specified maximum clock frequency?
A
Hold violation
B
Setup violation
C
All of the above
D
Propagation delay
5
2014 · Unclassified
ISROElectronics & Communication Engineering 2014
If the maximum effective aperture of a radiating small loop of a constant current is , the wave length of the radiated electromagnetic wave is
A
5000 mm
B
100 mm
C
1000 mm
D
500 mm
6
2014 · Unclassified
ISROElectronics & Communication Engineering 2014
A radar system uses a magnetron as high power RF source. Its transmitter emits 300 kW RF power at 10% duty factor. If the efficiency of the radar transmitter during a pulse is 60% and the power required during the pulse off period is 1 kW. The average power dissipation in radar is,
A
50.9 kW
B
301 kW
C
20.9 kW
D
150.5 kW