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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
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 
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 
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
. 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 [
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 _______
.
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 root locus will intersect j axis at A, the asymptotic line intersect j at point B 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
