GATE ECE 2000 | GATE ECE Year Wise Previous Years Questions

GATE ECE 2000

MCQ (Single Correct Answer)

-0.3

If the Op-Amp in the figure, is ideal, than V₀ is GATE ECE 2000 Analog Circuits - Operational Amplifier Question 90 English

zero

$$\left( {{V_1} - {V_2}} \right)\,\,\sin \,\,\omega t$$

$$ - \left( {{V_1} + {V_2}} \right)\,\,\sin \omega t$$

$$\left( {{V_1} + {V_2}} \right)\,\,\sin \omega t$$

GATE ECE 2000

MCQ (Single Correct Answer)

-0.6

In a digital communication system employing Frequency Shift Keying (FSK), the 0 and 1 bit are represented by sine waves of 10 KHz and 25 KHz respectively. These waveforms will be orthogonal for a bit interval of

$$45\,\,\mu \sec $$

$$200\,\,\mu \sec $$

$$50\,\,\mu \sec $$

$$250\,\,\mu \sec $$

GATE ECE 2000

MCQ (Single Correct Answer)

-0.6

In an FM system, a carrier of 100 MHz is modulated by a sinusoidal signal of 5 KHz. The bandwidth by Carson’s approximation is 1 MHz. If y(t) = (modulated waveform)³, then by using Carson’s approximation, the bandwidth of y(t) around 300 MHz and the and the spacing of spectral components are, respectively.

3 MHz, 5 KHz

1 MHz, 15 KHz

3 MHz, 15 KHz

1 MHz, 5 KHz

GATE ECE 2000

MCQ (Single Correct Answer)

-0.3

A system described by the transfer function $$$H\left(s\right)=\frac1{s^3+\alpha s^2+ks+3}$$$ is stable. The constraints on $$\alpha$$ and k are,

$$\alpha>0,\;\alpha k<3$$

$$\alpha>0,\;\alpha k\;>\;3$$

$$\alpha\;<\;0,\;\alpha k\;>\;3$$

$$\alpha\;>\;0,\;\alpha k\;<\;3$$

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