BASICS OF AC CIRCUITS

In case of Inductive circuit, Frequency is ___________Proportional to the inductance (L) or inductive reactance (XL).

• Directly

• Inversely

• No Effect

In inductive circuit, when Inductance (L) or inductive reactance (XL) increases, the circuit current decreases, but the circuit power factor ________?

• Increases

• Also Decreases

• Remain Same

• None of the above

In case of Capacitive circuit, Capacitance (C) is ___________ Proportional to the Capacitive reactance (XC).

• Directly

• Inversely

• No Effect

If Current and Voltage are 90 Degree Out of Phase, Then The Power (P) will be__________.

• Infinite

• Maximum

• Normal

• Minimum

• Zero

If Power factor = Cos θ = 1, it means that _____________.

• Input = Output

• PIN = POUT

• The circuit is resistive only

• The angle (θ) between Voltage and Current is Zero.

Using P=VI Cos φ Formula, We Can Find_______.

• Power of Single phase Circuit.

• Voltage of Single Phase Circuit

• Current of Single phase Circuit.

• Power Factor of Single Phase Circuit

• All of the above

Reciprocal of Power Factor = _________?

• Q Factor

• Demand Factor

• Diversity Factor

• Utilization Factor

Power Factor (Cos θ) =_________?

• W/kVA

• R/Z

• The Cosine of angle between Current and voltage

• All of the above

The relationship between Impedance (Z) and Admittance(Y) is ___________ ?

• Z=1/Y

• Z=1+Y

• Z=1-Y

• Z=Y²

Average value of a sinusoidal alternating signal is ————-for a full cycle.

• Maximum

• Zero

• Finite Value

• Infinite