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MANUFACTURING: Two processes are used manufacturing.
Coated film: A mixture of carbon, filler and binder is coated on a ring of insulating material. The surface of the film is processed to minimize abrasion of the film by the sliding contact tap. The contact is of brass or phosphor bronze. The contact is sparing loaded against element.
SPECIFICATIONS
Range of values 100 ohms to 10 mega ohm
Power rating 1/2W to 2.5W
Tolerance 20% for 100 ohms to 1 mega ohm
30% above 1 mega ohm
Voltage coefficient 0.005% volt
APPLICATIONS: These are used as present potentiometer in TV, in brightness and contrast control, radio and measuring instruments.
Write down the Maxwell's equation in differential form for free space.
It is the magnetic flux density which still remains in magnetic materials even when the magnetic force is removed. It is measured or calculated in Weber/m 2 .
a body is thrown horizontally with a velocity of u from the top of a tower. the displacement of the stone when the horizontal and vertical velocities are equal is
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whatis meant by kinametic?
A copper pot with mass 0.500 kg contains 0.170 kg of water ata temperature of 20.0ºC. A 0.250-kg block of iron at85.0ºC is dropped into the pot. Find the final temperature, assumin
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Explain the Adding Waves? When two waves come from the same light source, the light waves are coherent, meaning that the phase difference between the waves is constant in time.
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