Users Also Read

MCQ's Search Engine

Electrical Engineering

Mechanical Engineering

Civil Engineering

Automobile Engineering

Chemical Engineering

Computer Engineering

Electronics Engineering

Medical Science Engg

Q1. | For the same peak value which of the following wave will have the highest r.m.s. value ? |

A. | Square wave [Correct Answer] |

B. | Half wave rectified sine wave [Wrong Answer] |

C. | Triangular wave [Wrong Answer] |

D. | Sine wave [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss it below :Rakesh Pradhan Rakesh Said on 2020-01-24 09:43:10Explain Arundeep Said on 2015-07-24 06:57:29because both portion in cycle contain maximum area !! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ Which of the following waves has the highest value of peak factor '?

Square wave

Sine wave

Half wave rectifier sine wave

Triangular wave

⇒ The power consumed in a circuit element will be least when the phase difference between the current and voltage

180°

90°

60°

0°

⇒ The value of operator j2 is equal to

Zero

+1

-1

√-1

⇒ Power factor of the following circuit will be zero

Resistance

Inductance

Capacitance

Both (B) and (C)

⇒ The power factor of a D.C. circuit is always

Less than unity

Unity

Greater than Unity

Zero

⇒ While drawing vector diagram for a series circuit the reference vector is

Voltage

Current

Power

Phase angle

⇒ The unit of frequency of an A.C. signal is

Cycle

Cycle-sec

Hertz

Hertz/sec

⇒ 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

⇒ In a circuit containing R, L and C, power loss can take place

C only

L only

R only

All of the above

⇒ The peak value of a sine wave is 200 V. Its average value is

127.4V

141.4V

282.8V

200 V

⇒ The shunt element in a band pass filter is

Capacitive

Inductive

Parallel combination of L and C

Series combination of L and C

⇒ Selectivities of different resonance circuits are compared in terms of their

Impedances

Reactances

Frequencies

Band widths

⇒ For the same peak value, which of the following wave has the least mean value ?

Half wave rectified sine wave

Triangular wave

Sine wave

Square wave

⇒ In a series resonant circuit, the impedance of the circuit is

Minimum

Maximum

Zero

None of the above

⇒ Capacitors for power factor correction are rated in

kW

kVA

kV

kVAR

⇒ The double energy transient occur in the

Purely inductive circuit

R-L circuit

R-C circuit

R-L-C circuit

⇒ The capacitors for power factor correction are rated in terms of

Voltage

VA

kW

kVAR

⇒ In a R-L-C series circuit if voltage V across the circuit is reduced to half the current I will change to

2 I

I/2

3/4 I

5/8 I

⇒ 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

⇒ Form factor for a sine wave is

1.414

0.707

1.11

0.637

⇒ The power factor of a series R-L-C circuit at its half-power points is

Unity

Lagging

Leading

Lagging or leading

⇒ 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

⇒ 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

⇒ In an A.C. circuit power is dissipated in

Resistance only

Inductance only

Capacitance only

None of the above

⇒ The dual of a link is

Twig

Node

Loop

Tree branch

⇒ 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 r.m.s. value of a sine wave is 100A. Its peak value is

70.7 A

141.4A

150A

282.8 A

⇒ Inductance affects the direct current flow

Only at the time of turning off

Only at the time of turning on

At the time of turning on and off

At all the time of operation

⇒ The time constant of a series R-C circuit is given by

R/C

RC

^{2}

RC

R

^{2}C

⇒ The r.m.s. value and mean value is the same in the case of

Triangular wave

Sine wave

Square wave

Half wave rectified sine wave