Alternating current ,mean,rms value

AC stands for

• Air-conditioner

• Direct Current

• Alternating Current

• Alternating Voltage

A sine wave has a peak value of 354 V, What is the RMS value?

• 250 V

• 500 V

• 354 V

• 200V

The mean value of current for half cycle of an ac is $\frac{10}{\pi}$ A, its peak value is 

• 0 A

• 1 A

• 10 A

• 5 A

The r.m.s value of an alternating current is given by steady (D.C) current which when flowing through a given circuit for a given time produces

• the more heat than produced by A.C when flowing through the sam circuit

• the same heat than produced by A.C when flowing through the same circuit

• the less heat than produced by A.C when flowing through the sam circuit

What does RMS means?

• Really Monday Stinks

• Root Minus Square

• Root Mean Square

• Root Minus Subtraction

An electric current flowing in one direction only

• voltage

• parallel current

• direct current

• electric current

apparent value of ac is

• mean value for full cycle

• mean value for half cycle

• rms value

• all

Mean value of ac for half cycle is

• zero

• $\frac{i_0}{\sqrt{2}}$

• $\frac{2i_0}{\pi}$

• None

The electricity in our house is

• AC

• DC

• BC

• AD

Battery is

• AC source

• DC source

• none of the above

• all of the above