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 →
Which AC bridge is specifically suited for measuring inductance with a high Quality factor (Q > 10)?
AMaxwell's Bridge
BWien Bridge
CHay's Bridge
DSchering Bridge
Maxwell-Wien bridge is best suited for measuring unknown inductance of coils having a Q factor in the range of:
A1 < Q < 10
BQ < 1
CQ > 10
DQ > 100
Which measuring instrument operates strictly on the principle of Seebeck effect?
AThermistor
BLVDT
CRTD (Resistance Temperature Detector)
DThermocouple
A Piezoelectric transducer is used to measure dynamic pressure because it converts:
ATemperature change into resistance change
BLight intensity into current
CMechanical strain into electrical charge
DMagnetic flux into voltage
The open-circuit test on a transformer is performed at rated voltage to primarily determine:
AFull-load copper loss
BStray load loss
CCore loss (Iron loss)
DWinding resistance
The short-circuit test on a transformer is conducted to determine:
AHysteresis loss
BEddy current loss
CDielectric loss
DFull-load copper loss
The quality factor (Q-factor) of a series resonant circuit is given by which mathematical expression?
Asqrt(L * C) / R
B(1 / L) * sqrt(R / C)
C(1 / R) * sqrt(L / C)
DR * sqrt(C / L)
A second-order control system having a damping ratio (zeta) greater than 1 is classified as:
AUnderdamped
BUndamped
CCritically damped
DOverdamped
In an AC network, maximum power is transferred from source to load when the load impedance is equal to:
AReciprocal of the source impedance
BEqual to the source resistance only
CSquare root of source impedance
DComplex conjugate of the source impedance