Gas
Vapour
Plasma
Electrons
The frequency of a sound wave is related to its
The frequency of direct current is _
The frequency of sound waves in the audible range is
The frequency of ultrasound wave is typically
The frequency of which of the following is the highest?
The frequency range of FM radio broadcast in India is
The function of ball bearings in a wheel is:
The function of the choke is to
The function of the commutator in a D.C machine is
The fundamental characteristic of all waves are
