1
GATE ECE 1990
MCQ (Single Correct Answer)
+2
-0.6
The Op-Amp of fig has a very poor open loop voltage gain of 45 but is otherwise ideal. The gain of the Amplifier equals: GATE ECE 1990 Analog Circuits - Operational Amplifier Question 43 English
A
5
B
20
C
4
D
4.5
2
GATE ECE 1990
MCQ (Single Correct Answer)
+2
-0.6
The CMRR of the differential Amplifier of the fig is equal to GATE ECE 1990 Analog Circuits - Operational Amplifier Question 44 English
A
1000
B
0
C
900
D
1800
3
GATE ECE 1990
MCQ (Single Correct Answer)
+2
-0.6
In a BPSK signal detector, the local oscillator has a fixed phase error of 200. This phase error deteriorates the SNR at the output by a factor of
A
$$\cos {20^0}$$
B
$${\cos ^2}{20^0}$$
C
$$\cos {70^0}$$
D
$${\cos ^2}{70^0}$$
4
GATE ECE 1990
MCQ (Single Correct Answer)
+2
-0.6
An image uses $$512\, \times \,512$$ picture elements. Each of the picture elements can take any of the 8 distinguishable intersity levels. The maximum entropy in the above image will be
A
2097152 bits
B
786432 bits
C
648 bits
D
144 bits
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