A layer of lubricant is kept between the two surfaces
The two surfaces are pressed harder
Air gap is created between the two surfaces
Irregularities on both the surfaces are removed
The force which makes a vehicle to stop when break is applied is called
The four stroke petrol engine is based on
The fourth state of matter is known as
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: