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Question 1 of 13
1. Question
The highest frequency present in the signal x(t) is fmax. The highest frequency present in the signal y(t) = x*x(t) is
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Question 2 of 13
2. Question
The filter whose transfer function is of form G(s) = s*s – bs +c / s*s +bs+c is
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Question 3 of 13
3. Question
Let 3 + 4j be a zero of a fourth order linear phase FIR filter.The complex number which is not a zero of this filter is
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Question 4 of 13
4. Question
The bridge most suited for measurement of a four terminal resistance in range of .0001 ohm to .01 ohm is
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Question 5 of 13
5. Question
A mass psring damper system with force as input and displacement of the mass as output has a transfer function
G(s) = 1/(s*s+24s+900).A force input F(t) = 10 sin(70t) newtons is applied at time t = 0s.A beam from an optical stroboscope is focused on mass.In steady state the strobe frequency in hertz at which the mass appears to be stationery is (where pi is constant 3.14)
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Question 6 of 13
6. Question
A system with transfer function G(s) = 1/(s*s+1) has zero initial conditions.The percentage overshoot in its step response is
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Question 7 of 13
7. Question
The voltage Eo developed across a glass electrode for pH measurement is related to the temperature T by the relation
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Question 8 of 13
8. Question
An apparatus to capture ECG signals has a filter followed by a data acquisition system.The filter best suited for this application is
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Question 9 of 13
9. Question
The probability that a thermistor randomly picked up from a production unit is defensive is .01.The probability that out of 10 thermistors randomly picked up 3 are defective is
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Question 10 of 13
10. Question
The output frequency of an LC tank oscillator employing a capacitive sensor acting as the capacitor of the tank is 100 kHz.If the sensor capacitance increases by 10% the output frequency in kilo hertz becomes
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Question 11 of 13
11. Question
A signal is band limited to 0 to 12 kHz.The signal spectrum is corrupted by additive noise which is band limited to 10 to 12 kHz.Theoretically the minimum rate in kilohertz at which the noisy signal must be sampled so that uncorrupted part of the signal spectrum can be recovered is
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Question 12 of 13
12. Question
A beam of monochromatic light passes through two glass slabs of the same geometrical thickness at normal incidence.The refractive index of the first slab is 1.5 and that of second 2.0.The ratio of the time of passage of the beam through the first to second slab is
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Question 13 of 13
13. Question
The resolving power of a spectrometer consisting of a collimator a grating and a telescope can be increased by
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