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Q. What is efficiency of a transformer?
Efficiency of a transformer is described as the ratio of output power to the input power.
η= output power / input power
An open platform elevator is moving down a mine shaft.After the elevator has travelled 25m [from the top of the shaft]a stone is dropped from the top of the shaft .Find time taken
Describe the construction of optical fiber. Explain the principle of propagation of light waves within a fiber. Define acceptance angle and acceptance. How optical fibers can be u
KINEMATICS II 1. The concept of the derivative of the function is exceptionally important. The derivative shows that how fast the function changes when its argument is changed.
A more forceful argument which the weak principle: This implies that if the laws of the Universe were not favorable to the development of intelligent creatures to ask regarding the
Making a sun-dial To withstand all weather, a sun-dial should be form of metal or painted wood. A cardboard model can be formed for easy experiments. The gnomon which casts
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A certain spring is known to obey Hooke's Law. If a force of 10 newtons stretches the spring 2 meters, how far will a 30 newton force stretch the spring? Ans: A certain spr
hi, can you help me with sage homwork about physics
Explain how receiver functions in fibre optic communication system. Receiver: The optical signal received must be first converted within digital form and in case analog outp
What are the main types of laser? Types of lasers are as illustrated below: a. Solid State lasers b. Raman laser c. Semiconductor lasers d. Dye lasers e. Gaseous
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