The parameter of the transistor shown below are VTN =1.2 mA/V2, Kn= 0.5 mA/V2, and l= 0. The voltage VDS is
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Solution
Is= 50 μA =ID, ID, =Kn(VGS– VTN)2
⇒ 50 × 10–6= 0.5 × 10–3(VGS– 1.2)2
⇒ VGS= 1.516 V,
VG = 0, VS= VG – VGS = – 1.516 V
VDS= VD– VS= 5 –(– 1.516) = 6.516 V
Hence (b) is correct option.
The events A and Bare such that P(A) = 0.2, P(B) = 0.6,P(A⁄B)= 0.3. The P (A’ intersection B’) is _________.
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Solution
2 Marks
The value of the integral \(I=\frac{1}{\sqrt{8\pi }}\int_{0}^{\infty }exp\left [ \frac{-x^{2}}{2} \right ]\) dx is ____________.
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Solution
2 Marks
The Fourier transform of x(t) = A cos (2πfot) is x(jω) and x(jω) = 10[δ(ω– 4π) +δ(ω+ 4π)]. The value of A and fo and respectively.
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Solution
2 Marks
Value of the following integral \(\int_{e}\frac{1+z}{z(2-z)}dz\), where c is circle | z | = 1 is _________.
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Solution
2 Marks
The solution of differential equation \(\frac{dy}{dx}=\frac{-x}{y}\) at x =1 and y = √3 is
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Solution
2 Marks
A type-A chopper operates at 2 kHz from a source of 80V.DC load time constant is 5 ms and load resistance is 10Ω. Current ripple for a load voltage of 40 V in ampere is____________.
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Solution
2 Marks
A single phase full wave mid-point thyristor uses 230 V/200 Vtrans former. with centre tap on the secondary side. The PIV per thyristor in volt is __________.
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Solution
PIV = √2 Vm
⇒ PIV = √2 × 200
⇒ PIV = 282.84 V
2 Marks
Match items in List I with List II.
2 Marks
For parallel operation of transformers, which condition is essential?
1.Same voltage ratio.
2.Same pu leakage impedance.
3.Same Xe|re ratio.
4.Same polarity.