DMRC Electronics Engineering Paper-1 2016

Instructions

For the following questions answer them individually

DMRC Electronics Engineering Paper-1 2016 - Question 51


The analog signal m(t) is given below m(t) = 4 cos 100 pt + 8 sin 200 pt + cos 300 pt, the Nyquist sampling rate will be:

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DMRC Electronics Engineering Paper-1 2016 - Question 52


Find the noise factor for an antenna at $$27^\circ$$ C with equivalent noise temperature $$30^\circ$$ K:

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DMRC Electronics Engineering Paper-1 2016 - Question 53


Inverse Laplace transform of $$\frac{2s + s}{(s + 3)(S + 2)}$$ is:

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DMRC Electronics Engineering Paper-1 2016 - Question 54


The analog signal given below is sampled by 600 samples per second for m(t) = 3 sin 500 pt + 2 sin 700 pt then folding frequency is:

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DMRC Electronics Engineering Paper-1 2016 - Question 55


Which one most appropriate dynamic system?

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DMRC Electronics Engineering Paper-1 2016 - Question 56


In which of these is reverse recovery time nearly zero?

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DMRC Electronics Engineering Paper-1 2016 - Question 57


Frequency shift keying is used mostly in:

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DMRC Electronics Engineering Paper-1 2016 - Question 58


A parallel polarized wave is incident from air into paraffin having relative permittivity 3, the value of its Brewster angle is:

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DMRC Electronics Engineering Paper-1 2016 - Question 59


The phase angle corresponding to $$\frac{\lambda}{4}$$ in a standing - wave pattern is:

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DMRC Electronics Engineering Paper-1 2016 - Question 60


A 10 km long line has a characteristic impedance of 400 ohms. If line length is 100 km, the characteristic impedance is:

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