Electrical Engineering
Electrical Engineering MCQs with Answers
Electrical engineering MCQs with answers and detailed explanations for PEC, NTS, WAPDA and engineering job tests. Machines, circuits and power systems. Take a scored quiz instead →
Schering bridge is commonly employed in high-voltage laboratories to measure:
AFrequency of supply
BCapacitance and dissipation factor (loss angle)
CMutual inductance
DSelf-inductance
The initial value theorem of Laplace transform states that x(0+) is equal to:
Alim (s -> infinity) [ s * X(s) ]
Blim (s -> 0) [ s * X(s) ]
Clim (s -> 0) [ X(s) ]
Dlim (s -> infinity) [ X(s) / s ]
A megger is an instrument used specifically for measuring:
AVery low armature resistance
BAC line capacitance
CMedium load resistance
DHigh insulation resistance
The continuous-time signal x(t) = e^(j * omega0 * t) is:
AEnergy signal
BPower signal
CTransient impulse signal
DNeither energy nor power signal
Nyquist sampling rate for a band-limited signal with maximum frequency component Fm is:
A2 * Fm
B4 * Fm
CFm
D0.5 * Fm
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
The steady-state error of a Type-1 system to a unit step input is:
AZero
B1 / Kv
CInfinite
D1 / (1 + Kp)
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