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1
GATE ECE 2000
MCQ (Single Correct Answer)
+2
-0.6
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
A
7.5 cm
B
15 cm
C
15 m
D
150 m
2
GATE ECE 1999
MCQ (Single Correct Answer)
+2
-0.6
A transmitting antenna radiates 251 W isotropically. A receiving antenna, located 100m away from the transmitting antenna, has an effective aperture of 500 cm2. The total power received by the antenna is
A
10 nW
B
1 $$\mu $$ W
C
20 $$\mu $$ W
D
100 $$\mu $$ W
3
GATE ECE 1997
MCQ (Single Correct Answer)
+2
-0.6
A parabolic dish antenna has a conical beam 20 wide. The directivity of the antenna is approximately
A
20 dB
B
30 dB
C
40 dB
D
50 dB
4
GATE ECE 1996
MCQ (Single Correct Answer)
+2
-0.6
A 1 km long microwave link uses two antennas each having 30dB gain. If the power transmitted by one antenna is 1 W at 3 GHz, the power received by the other antenna is approximately
A
98.6 $$\mu $$ W
B
76.8 $$\mu $$ W
C
63.4 $$\mu $$ W
D
55.2 $$\mu $$ W
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Control Systems
Stability Frequency Response Analysis Compensators State Space Analysis Root Locus Diagram Signal Flow Graph and Block Diagram Time Response Analysis Basic of Control Systems
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Probability and Statistics Transform Theory Numerical Methods Calculus Differential Equations Linear Algebra Vector Calculus Complex Variable
Analog Circuits
Oscillators Operational Amplifier 555 Timer Diodes FET and MOSFET Power Amplifier Frequency Response Bipolar Junction Transistor Feedback Amplifier
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Network Elements Sinusoidal Steady State Response Network Theorems Two Port Networks Network Graphs Transient Response State Equations For Networks Miscellaneous
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Waveguides Miscellaneous Antennas Transmission Lines Uniform Plane Waves Maxwell Equations
Electronic Devices and VLSI
IC Basics and MOSFET PN Junction BJT and FET Semiconductor Physics
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Sequential Circuits Number System and Code Convertions Logic Gates Combinational Circuits Semiconductor Memories Logic Families Analog to Digital and Digital to Analog Converters Boolean Algebra
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Instruction Set and Programming with 8085 Pin Details of 8085 and Interfacing with 8085
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Discrete Time Signal Fourier Series Fourier Transform Continuous Time Signal Laplace Transform Fourier Transform Discrete Fourier Transform and Fast Fourier Transform Representation of Continuous Time Signal Fourier Series Discrete Time Linear Time Invariant Systems Transmission of Signal Through Continuous Time LTI Systems Transmission of Signal Through Discrete Time Lti Systems Miscellaneous Continuous Time Linear Invariant System Discrete Time Signal Z Transform Sampling
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Fundamentals of Information Theory Noise In Digital Communication Digital Communication Systems Random Signals and Noise Analog Communication Systems
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Verbal Ability Logical Reasoning Numerical Ability
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