The peak value of 220 volts of a.c. main...

The peak value of 220 volts of a.c. mains is ...... volt.

115.6

`311.0`

440

Text Solution

Verified by Experts

The correct Answer is:

`V_m=sqrt2V_(rms)`
`=sqrt2xx220`
`=1.414xx220`
= 311.08
`therefore V_m approx` 311 V

Topper's Solved these Questions

ALTERNATING CURRENTS
KUMAR PRAKASHAN|Exercise SECTION-D MCQs (COMPETITIVE EXAMS)|64 Videos
ALTERNATING CURRENTS
KUMAR PRAKASHAN|Exercise SECTION-C NCERT EXEMPLAR (Long Answer)|5 Videos
ATOMS
KUMAR PRAKASHAN|Exercise Section-D -MCQs asked in GUJCET / Board Exam|34 Videos

Similar Questions

Explore conceptually related problems

If E_0 represents the peak value of the voltage in an a.c. circuit, the rms value of the voltage will be ......

In an a.c. circuit , peak value of voltage is 423 volt. Its effective voltage is …… volt.

A message signal of frequency 10kHz and peak voltage of 10"volts" is used to modulate a carrier of frequency 1 MHz and peak voltage of 20"volts" . Determine ( a ) modulation index ( b ) the side bands produced.

Calculate the peak value of current if the crest factor is 10 and the rms value is 2A.

The frequency of A.C. mains in India is ….. Hz.

The maximum value of an A.C. voltage coming in our houses is ………. % more than that of its r.m.s. value.

Calculate the crest factor if the peak value of current is 10A and the rms value is 2A.

If two bulbs of wattage 25 and 100 respectively each rated at 220 volt are connected in series with the supply of 440 volt , then which bulbs will fuse

The resistance of galvanometer is G ohm and the range is 1 volt. The value of resistance used to convert it into a voltmeter of ragne 10 volt is:-

(a) The peak voltage of an ac supply is 300 V. What is the rms voltage? (b) The rms value of current in an ac circuit is 10 A. What is the peak current?

KUMAR PRAKASHAN-ALTERNATING CURRENTS -SECTION-D MCQs (DARPAN BASED ON TEXTBOOK)

In an a.c. circuit , peak value of voltage is 423 volt. Its effective ...
Text Solution
|
If E0 represents the peak value of the voltage in an a.c. circuit, the...
Text Solution
|
The peak value of 220 volts of a.c. mains is ...... volt.
Text Solution
|
In an A.C. circuit of inductance 50 mH with negligible resistance and ...
Text Solution
|
An alternating current is given by the equation i = (i1 cos omegat + i...
Text Solution
|
In a circuit, the value of the alternating current is measured by hot ...
Text Solution
|
The frequency of an alternating voltage is 50 cycles/s and its amplitu...
Text Solution
|
For a series L-C-R a.c.circuit at resonance, the statement which is no...
Text Solution
|
An A.C. circuit consists of an Indicator of inductance 0.5H and a capa...
Text Solution
|
The phase difference between the current and voltage of L-C-R circuit ...
Text Solution
|
The resonant frequency of a circuit is f. If the capacitance is made 4...
Text Solution
|
An L-C-R series circuit with R = 100Omega is connected to a 200 V, 50 ...
Text Solution
|
As shown in figure series L-C-R circuit , when driven by an emf source...
Text Solution
|
A transistor oscillator using a resonant circuit with an inductor L (o...
Text Solution
|
The A.C. voltage and the current in a circuit are given by the followi...
Text Solution
|
In the transmission of a.c. power through transmission lines, when the...
Text Solution
|
As shown in the figure, series combination of ideal capacitor, pure re...
Text Solution
|
Three series A.C. circuits (i) RC (ii) RL and (iii) LC (where values o...
Text Solution
|
For one series A.C. circuit, its reactance is equal to its resistance....
Text Solution
|
Wattless current is possible in a circuit having ………..
Text Solution
|