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 a sine wave with peak value E_{max}
the average value is |

A. | 0.636 E_{max} [Correct Answer] |

B. | 0.707 E_{max} [Wrong Answer] |

C. | 0.434 E_{max} [Wrong Answer] |

D. | 1.414 E_{max} [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss it below :RAKESH CHANDRA Said on 2016-07-27 09:36:48o.637 Emax !! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

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

Minimum

Maximum

Zero

None of the above

⇒ Power factor of the following circuit will be unity

Inductance

Capacitance

Resistance

Both (A) and (B)

⇒ 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

⇒ 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

⇒ Power factor of electric bulb is

Zero

Lagging

Leading

Unity

⇒ The shunt element of prototype high pass filter is

Resistive

Inductive

Capacitive

Combination of L and C

⇒ A heater is rated as 230 V, 10 KW, AC. The value 230 V refers t

Average voltage

r.m.s. voltage

Peak voltage

None of these

⇒ The double energy transient occur in the

Purely inductive circuit

R-L circuit

R-C circuit

R-L-C circuit

⇒ The best place to install a capacitor is

Very near to inductive load

Across the terminals of the inductive load

Far away from the inductive load

Any where

⇒ The dual of a link is

Twig

Node

Loop

Tree branch

⇒ In a parallel R-C circuit, the current always ____the applied voltage.

Lags

Leads

Remains in phase with

None of the above

⇒ 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 r.m.s. value of a half-wave rectified current is 100 A. Its value for full-wave rectification would be____ amperes.

141.4

200

200/π

40/π

⇒ The power factor of incandescent bulb is

0.8 lagging

0.8 leading

Unity

Zero

⇒ Power factor of an inductive circuit is usually improved by connecting capacitor to it in

Parallel

Series

Either (A) or (B)

None

⇒ The safest value of current the human body can carry for more than 3 second is

4 mA

9 mA

15 mA

25 mA

⇒ For the same peak value of voltage which wave form will have the least r.m.s. value ?

Sine wave

Square wave

Triangular wave

Full wave rectified sine wave

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

Less than unity

Unity

Greater than Unity

Zero

⇒ A network is said to be non-linear if it does not satisfy

Homogeneity condition

Superposition condition

Both (A) and (B)

Associative condition

⇒ 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 capacitors for power factor correction are rated in terms of

Voltage

VA

kW

kVAR

⇒ The dual of a loop is

Twig

Node pair

Mesh

Tree

⇒ Ohm is the unit of all of the following except

Inductive reactance

Capacitive reactance

Resistance

Capacitance

⇒ Power factor of the following circuit will be zero

Resistance

Inductance

Capacitance

Both (B) and (C)

⇒ The ratio of the bandwidth to the resonance frequency is called the____ of the circuit.

Impedance

Susceptance

Quality factor

Selectivity

⇒ Higher the Q of a series circuit

Broader its resonance curve

Narrower its pass band

Greater its band width

Sharper its resonace

⇒ Skin effect occurs when a conductor carries current at____ frequencies.

Very low

Low

Medium

High

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

Maximum

Minimum

Zero

Infinite

⇒ The time period of a sine wave is 1/50 seconds. Its frequency is

20 Hz

30 Hz

40 Hz

50 Hz

⇒ Poor power factor results in all of the following EXCEPT.

Overloading of transformers

Overloading of altemators

Reduction in power losses

Reduction in load handling capacity of electrical system