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A step-up transformer works on 220V and gives 2A to an external resistor. The turn ratio between the secondary and primary coils is 2 : 25. Assuming 100% efficiency, Determine the Primary current, secondary voltage and power delivered.
It is based on the principle that conductivity of a semiconductor enhances with increase in the intensity of incident light. In this, a thin layer of some semiconductor (as
Cathode rays, discovered by Sir Willium Crooke are the stream of electrons. They may be given by using a discharge tube containing gas at a low pressure of the order of 10-2 mm of
Derive First law of thermodynamics When an amount of heat energy is supplied to the system, part of it enhances internal energy of the system and remaining is utilized by the s
a) A positive point test charge q 0 is placed at the midpoint p among the two equal positive charges q. What forces acts on it at or near this point p? b) Two charges 1X10 -
3 . 50 nC of charge is consistently distributed in a solid Styrofoam ball of radius 2 . 00 cm cantered at x = 2 . 00 cm on the x-axis of a Cartesian coordinate system. -1 . 25 nC o
Show that the Nusselt number for a sphere in a quiescent fluid is 2. Hint: Write the thermal resistance for the outer surface of the sphere in terms as both conductive and conve
An athlete run a certain distance before taking a long jump. Why?
assignment complete the following table
a catapult can hurl a rock straight up in the air 45 m high. What is the maximun range of the catapult?
The angular displacement of a body is a function of time and giving by equation h=10+3t+6t square,where t is in seconds.determine the angular velocity, acceleration when t=5seconds
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