ECE :: Exam Questions Paper
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With respect to the Miller integrator sweep shown below, the sweep rate will be
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The trigonometric Fourier series for the waveform f(t) shown below contain
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For a class B amplifier using a supply of VCC = 30 V and driving a load of 16 Ω the maximum efficiency will be __________ .
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If x[n] = cos
then the sequence x[n] is -
Find the electric charge required on the earth and moon to balance their gravitational attraction if the charge on the earth is 10 times that on the moon.
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An audio signal of FM radio station is sampled at a rate of 15% above the Nyquist rate. Signal is sampled in 512 levels and bandwidth of the signal is 4 KHz. The minimum bandwidth required to transmit this signal will be
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A Hartley oscillator uses FET with gm of 2 ms and rd = 2 KΩ. The total coil inductance is 10 μH with turns ratio of input to output side of 1 : 10. It is tuned with a 50 pf capacitor. Find frequency of oscillations, amplifier gain margin in dB.
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.
= cos
= cos
Damping ratio is:
= 0.707.
= 10 x 4
