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Q. Will a DC motor really produce voltage if it is spun in reverse? Answer:- It will produce voltage if you spin it forwards too. The merely difference between a DC motor
What are fibers optics made of? For visible light or lighting purposes spectrum transmission, several types of fibers are used. Glass in very suitable strands which have to be
Q. Describe the isotopes? Answer:- An atom of an element that has a diverse number of neutrons in its nucleus to other atoms of the element.
Q. Write the equation of a 25 cycle current sine wave having rms value of 30 A. Data: ν = 25 Hz, Irms = 30 A Solution: i = I o sin ωt =
WORK AND ENERGY 1. Work can be defined as: the force applied in direction of displacement ×. This means that if the force F acts at an angle θ with respect to the direct
A polyatomic (non-linear) molecule (like NH3) can rotate about any of three co-ordinate dimension. As it has 6 degrees of freedom, 3 rotational and 3 translational. At normal tempe
Explain Gauss's law in electrostatics? 1C of charge is same to the charge of n number of electrons in magnitude. What is the value of n? What happens to the force between t
Describe working of Heat engine Heat engine is a device by which a system is made to undergo a cyclic process that results in conversion of heat to work. * It having of a
Classification of conducting materials: Electrical resistivity of a conducting material or conductor ranges from 10 -8 to 10 -3 ohm-m. A good conducting material should have
A 30g bullet strikes a .650kg block attached to a fixed horizontal spring whose spring constant is 5.90x10 3 N/m and sets it into vibration with an amplitude of 20.0cm. What was th
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