Engineering
Engineering MCQs With Answers
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The continuous-time signal x(t) = e^(j * omega0 * t) is:
AEnergy signal
BPower signal
CTransient impulse signal
DNeither energy nor power signal
A derivative controller in a closed-loop system is used to improve:
ADC offset gain
BTransient response and damping
CSteady-state error
DSystem type number
The damping ratio zeta of a critically damped second-order system is:
ALess than 1.0
B0
CGreater than 1.0
D1.0
In Nyquist stability criterion, N = Z – P, where N represents the number of clock-wise encirclements of point:
A+1 + j0
B0 + j0
C-1 + j0
D0 - j1
Race-around condition occurs in a JK flip-flop when:
AJ = 1, K = 1 and clock pulse width is greater than propagation delay
BJ = 0, K = 0 with high clock
CJ = 1, K = 0 with low clock
DClock pulse width is zero
De Morgan’s First Law states that (A + B)’ is equivalent to:
AA' + B'
B(A * B)'
CA * B
DA' * B'
In an insulated-gate bipolar transistor (IGBT), the control gate terminal is insulated from channel similar to a:
ASCR
BMOSFET
CBJT
DDIAC
A Buck-Boost DC-DC converter produces an output voltage that is:
AAlways less than input voltage with same polarity
BAC sinusoidal waveform
CInverted in polarity relative to input voltage
DAlways greater than input voltage with same polarity