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GATE EC: 2018 Mini Mock 4
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Question 1
L1 = 17mH and C = 50pF is define for Hartley oscillator what will be the value of L2 for frequency 168KHz. If the mutual inductance between and is 7μH
Question 2
what is the average probability of error in a coherent FSK (1bit decoding) system transmitting binary data @while Gaussian noie of zero mean and spectral density added and with no noise ,amplitude of required signal is
Question 3
For a Reflex Klystron oscillator, how is the frequency of oscillation f related to the repeller voltage VR?
Question 4
Let be a real and even signal whose Fourier transform is represented by. Then which of the following can be a possible
Question 5
A uniformly doped silicon pn junction has dopant profile of . If the peak electric field in the junction at breakdown Is , the breakdown voltage of this junction is
Question 6
An npn transistor under forward-active mode of operation is biased at And has a total emitter-base capacitance of 12pF, and the base transit time of 260 psec.Under this condition, depletion capacitance of the emitter base junction is [
Question 7
The following arrangement of master- slave flip-flop
has the initial state of P, Q as 0, 1 respectively. After three clock cycles the output states P, Q is respectively
has the initial state of P, Q as 0, 1 respectively. After three clock cycles the output states P, Q is respectively
Question 8
A 20 m length of line must be connected to a 2.5 m length of line that is terminated in a resistor. If the line is lossless and operating at 30 MHz, the characteristic impedance of quarter-wave transformer to match two lines for a VSWR = 1 on main line is _______.
Question 9
The open loop transfer function of the system is G(s) H(s) = . The root locus will intersect j axis at A, the asymptotic line intersect j at point B
The values are
The values are
Question 10
A capacitor C is charged through a resistance R from a D.C. voltage. If C = 10 mF and R = 1 KΩ, find the time taken (in sec) by the capacitor to receive 90% of its final charge.
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ESE & GATE ECGeneralMay 17ESE & GATE EC