Question is ⇒ The product of apparent power and cosine of the phase angle between circuit voltage and current is, Options are ⇒ (A) True power, (B) Reactive power, (C) Volt-amperes, (D) Instantaneous power, (E) , Leave your comments or Download question paper.

Question is ⇒ The product of apparent power and cosine of the phase angle between circuit voltage and current is, Options are ⇒ (A) True power, (B) Reactive power, (C) Volt-amperes, (D) Instantaneous power, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	The product of apparent power and cosine of the phase angle between circuit voltage and current is
A.	True power [Correct Answer]
B.	Reactive power [Wrong Answer]
C.	Volt-amperes [Wrong Answer]
D.	Instantaneous power [Wrong Answer]
View Answer 11 -3 Explanation:- Answer : A Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒ A coil with large distributed capacitance has a
High resonant frequency
Low resonant frequency
Low quality factor
Low resistance

⇒ At very low frequencies a series R-C circuit behaves as almost purely____
Resistive
Inductive
Capacitive
None of these

⇒ The ratio of the bandwidth to the resonance frequency is called the____ of the circuit.
Impedance
Susceptance
Quality factor
Selectivity

⇒ Capacitive reactance is more when
Capacitances is less and frequency of supply is less
Capacitance is less and frequency of supply is more
Capacitance is more and frequency of supply is less
Capacitance is more and frequency of supply is more

⇒ Two sinusoidal quantities are said to be phase quadrature, when their phase difference is
0
30°
45°
90°

⇒ In a purely inductive circuit
Actual power is zero
Reactive power is zero
Apparent power is zero
None of these

⇒ The capacitors for power factor correction are rated in terms of
Voltage
VA
kW
kVAR

⇒ The form factor is the ratio of
Peak value to r.m.s. value
r.m.s. value to average value
Average value to r.m.s. value
None of these

⇒ The value of operator j2 is equal to
Zero
+1
-1
√-1

⇒ Power factor of the following circuit will be unity
Inductance
Capacitance
Resistance
Both (A) and (B)

⇒ The power consumed in a circuit element will be least when the phase difference between the current and voltage
180°
90°
60°
0°

⇒ When an alternating current passes through an ohmic resistance the electrical power converted into heat is
Apparent power
True power
Reactive power
None of the above

⇒ The form factor of D.C. supply voltage is always
Zero
0.5
Unity
Infinite

⇒ The dual of a loop is
Twig
Node pair
Mesh
Tree

⇒ In A.C. circuit the power curve is a sine wave having
Double the frequency of voltage
Same frequency as that of voltage
Half the frequency of the voltage
None of these

⇒ The r.m.s. value of a sine wave is 100A. Its peak value is
70.7 A
141.4A
150A
282.8 A

⇒ The power factor at resonance in RLC parallel circuit is
Zero
0.08 Lagging
0.8 Leading
Unity

⇒ In an A.C. circuit I sin Φ is called
Active component
Wattless component
Any of the above
None of these

⇒ What inductance will give the same reactance as a capacitor of 2 µF when both are at 50 Hz?
5 H
10 H
15 H
20 H

⇒ The ratio of active power to apparent power is known as ____ factor.
Demand
Load
Power
Form

⇒ Which of the following statement is incorrect ?
Resistance is a passive element
Voltage source is an active element
Conductance is a passive element
Current source is a passive element

⇒ A parallel resonant circuit can be used
As a high impedance
To reject a small band of frequencies
Both (A) and (B)
To amplify certain frequencies

⇒ The period of a wave is
The same as frequency
Time required to complete one cycle
Expressed in amperes
None of the above

⇒ In a series resonant circuit, the impedance of the circuit is
Maximum
Minimum
Zero
Infinite

⇒ The power factor of a series R-L-C circuit at its half-power points is
Unity
Lagging
Leading
Lagging or leading

⇒ The r.m.s. value of pure cosine function is
0.5 of peak value
0.707 of peak value
Same as peak value
Zero

⇒ Form factor is the ratio of
Average value/r.m.s. value
Average value/peak value
r.m.s. value/average value
r.m.s. value/peak value

⇒ Power factor of the following circuit will be zero
Resistance
Inductance
Capacitance
Both (B) and (C)

⇒ For a sine wave with peak value I_max the r.m.s. value is
0.5 I_max
0.707 I_max
0.9 I_max
1.414 I_max

⇒ While drawing vector diagram for a series circuit the reference vector is
Voltage
Current
Power
Phase angle