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ECIL GET 2017 Recruitment: Electronics Section Quiz 10
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Question 1
For Butterworth and Chebyshev filters, the correct statement is:
Question 2
Following four resistances are connected in parallel to a DC voltage source (given in options); the largest power is dissipated by
Question 3
A 440 V 6-pole 50 Hz three-phase induction motor is operating from a 440 V supply and driving a grinding mill, supplying rated HP. The rpm of the motor is approximately equal to
Question 4
Laplace transform of e-at f(t) is
Question 5
1 cm3 of pure Germanium at 20 °C contains about 4.2×1022 atoms, 2.5×1013 free electrons and 2.5×1013 holes. 0.001% of Arsenic doping donates an extra 1017 free electrons in the same volume. The approximate number of holes in one cm3 in the doped semiconductor under equilibrium condition is:
Question 6
Which of the following statements is true?
Question 7
Electric field and magnetic field perpendicular to each other in which of the following?
Question 8
A 12-bit ADC has input signal range of 
1 V. The signal to quantization noise ratio if a sine wave signal with 0.25 V peak voltage is given as input is :
1 V. The signal to quantization noise ratio if a sine wave signal with 0.25 V peak voltage is given as input is :Question 9
A uniformly distributed random signal x[n] with mean mx=2 and variance
, is passed through a 3-point moving-average filter having an impulse response {h[n]}=
,What will be the mean and variance of output?
, is passed through a 3-point moving-average filter having an impulse response {h[n]}=,What will be the mean and variance of output? Question 10
A phase lock loop with a first order loop filter can track :
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