A n-channel JFET has IDSS = 2 mA, Gate to source voltage VGS = - 2 V and trans-conductance is 0.5 mW then pinch-off voltage is __________ .

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The amplifier circuit shown below uses a silicon transistor. The capacitors Cc and CE can be assumed to be short at signal frequency and the effect of output resistance r0 can be ignored. If CE is disconnected from the circuit, which one of the following ...

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The amplitude of a pair of composite sinusoidal signal y(n) = x1(n) + x2(n) with x1(n) = sin (5πn) x2(n) = √ 3 sin (5πn) is ________ .

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Consider the probability density (x) = ae-b|x| where x is a random variable whose allowable values range from x = - ∞ to x = + ∞. P(1 ≤ x ≤ 2)

A

B

C

D

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The ratio of the diffusion coefficient in a semiconductor has the units

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A TV picture is to be transmitted over a channel of 6 MHz bandwidth at a 35 dB S/N ratio. The capacity of the channel is

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Denominator polynomial of a transfer function of certain network is:
s3 + s2&nb...

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For a given voltage, four heating coils will produce maximum heat when connected

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The specific gravity of tungsten is 13.8 and its atomic weight is 184.0 Assume that there are two free elements per atom. Then the Fermi level or characteristic energy for the crystal in eV will be

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A noiseless 3 KHz channel can transmit binary at the rate _________ .

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The antenna current of an AM transmitter is 8 A, when only the carrier is sent, but it increases to 8.93 A when the carrier is modulated by a single sine wave. Determine the antenna current when the percent of modulation changes to 0.8

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The analog signal given below is sampled at 1200 samples per second. m(t) = 2 sin 120 πt + 3 sin 240 πt + 4 sin 360 πt + 5 sin 480 πt + 6 sin 600 πt + 7 sin 720 πt. The folding (maximum) frequency is _________.

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Consider a unity feedback control system with open-loop transfer function G(s) = k/s(s+1) The steady state error of the system due to a unity step input is :

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During transmission over a communicate channel, bit errors occur independently with probability 1/2 . If a block of 3 bits are transmitted, the probability of at most one bit error is equal to

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In a flash type ADC, employing 15 comparators resolution with 10 volts reference; is expected to be :

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The gradient of any scalar field always yields __________ .

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When phase-lag compensation is used in a system, then gain cross over frequency, bandwidth and undamped frequency are respectively

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Consider the following
1. Maximum energy of electrons liberated photoelectrically is independent of light intensity
2. Maximum energy of electrons liberated photoelectrically varies nonlinearly with frequency of incident light.

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As the temperature increases the mobility of electrons ________ .

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What are the values of Emax and Emin displayed on the oscilloscope, when a 1 kV P-P carries is modulated to 50%?

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