GATE ECE 1990 | GATE ECE Year Wise Previous Years Questions

GATE ECE 1990

MCQ (Single Correct Answer)

-0.6

For good stabilized biasing of the transistor of the CE Amplifier of fig, we should have GATE ECE 1990 Analog Circuits - Bipolar Junction Transistor Question 18 English

GATE ECE 1990 Analog Circuits - Bipolar Junction Transistor Question 18 English

$${{{R_E}} \over {{R_B}}} < < 1$$

$${{{R_E}} \over {{R_B}}} > > 1$$

$${{{R_e}} \over {{R_B}}} < < {h_{FE}}$$

$${{{R_E}} \over {{R_B}}} > > {h_{FE}}$$

GATE ECE 1990

MCQ (More than One Correct Answer)

-0.6

Which of the following statements are correct for basic transistor Amplifier configurations?

CB Amplifiers has low input impendence and low current gain.

CC Amplifiers has low output impedence and a high current gain.

CE Amplifier has very poor voltage gain but very high input impedance.

The current gain of CB Amplifier is higher than the current gain of CC Amplifiers.

GATE ECE 1990

MCQ (Single Correct Answer)

-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

2097152 bits

786432 bits

648 bits

144 bits

GATE ECE 1990

MCQ (Single Correct Answer)

-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

$$\cos {20^0}$$

$${\cos ^2}{20^0}$$

$$\cos {70^0}$$

$${\cos ^2}{70^0}$$

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