GATE ECE 1998 | GATE ECE Year Wise Previous Years Questions

GATE ECE 1998

Subjective

-0

Implement a monostable multivibrator using the timer circuit shown, in Fig. Also determine an expression for ON time T of the o/p pulse. GATE ECE 1998 Analog Circuits - 555 Timer Question 3 English

GATE ECE 1998

MCQ (Single Correct Answer)

-0.3

The image channel selectivity of super heterodyne receiver depends upon

IF amplifiers only

RF and IF amplifiers only

Preselector, RF and IF amplifiers

Pre selector, and RF amplifiers only

GATE ECE 1998

MCQ (Single Correct Answer)

-0.3

A DSB-SC signal is generated using the carrier $$\cos\left(\omega_ct\;+\;\theta\right)$$ and modulating singal x(t). The envelope of the DSB-SC signal is

x(t)

$$\left|x\left(t\right)\right|$$

only positive portion of x(t)

$$x\left(t\right)\cos\left(\theta\right)$$

GATE ECE 1998

MCQ (Single Correct Answer)

-0.3

Quadrature multiplexing is

the same as FDM

the same as TDM

a combination of FDM and TDM

quite different from FDM and TDM

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