Define the principle and working of an a.c. generator., Define, with the he...

Define, with the help of diagram, the principle and working of an a.c. Generator. Write the expression for the e.m.f. generated in the coil in terms of its speed of rotation

heat transfer, Heat may be transmitted from one body to the other by any o...

Heat may be transmitted from one body to the other by any of three possible ways: conduction, radiation and convection.  In the conduction, convection phenomena, a medium is essent

Interference, if in an interference pattern,the ratio between maximum and m...

if in an interference pattern,the ratio between maximum and minimum intensities is 36:1,find the ratio between the amplitude and intensities of the two interfering waves.

Voltage signal: analog voltage signal, The signal which shows the continuou...

The signal which shows the continuous variation of voltage with time is called as analog voltage signal

What is the wavelength of wave that propagates down a string, The speed at ...

The speed at which a wave propagates down a string is 300 meters per second.  If the frequency of this wave is 150 Hertz, what is the wavelength of this wave? Ans: The wavel

Mechanics, to derive expreation for magnitude & direction for the resultant...

to derive expreation for magnitude & direction for the resultant which two are acting at a point

Which of the following are isoelectronic with one another, Which of the fol...

Which of the following are isoelectronic with one another: (1)Na + ans Ne   (2)K + ans O       (3)Ne ans O          (4)Na + ans K + Ans: Na + ans Ne

Calculate the impulse of ball, A baseball bat strikes a ball with a force o...

A baseball bat strikes a ball with a force of 30 newtons.  If the ball was in contact with the bat for 1/10 of a second, What impulse did the ball receive? Ans - 3 Newt

Forces and nature,

Electromagnetic waves, What is ground wave?

What is ground wave?