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A 400V, 3-phase star linked alternator supplies a delta-connected load, each phase of which has a resistance of 30 and inductive reactance 40. Calculate (a) the current sup
A spider is hanging by means of its own silk thread directly above a transparent fixed sphere of r = 20cm .... the refractive index of material of sphere is root(2).... and height
Determine the Q-factor of damped oscillator with resonant frequency 500Hz and damping coefficient 0.5 per second.
Boat A is travelling at 4.6 m/s. Boat B is moving away from boat A at 9.2 m/s, as shown in the figure below. The captain of boat B blows an air horn with a frequency of 550 Hz
IMPULSE: When a force acts on a body for a very short time, the product of the force and the time for which the force acts, is called the impulse or impulse of force".
Archimedes' principle A body which is submerged into a fluid is buoyed up through a force equal in magnitude to the weight of the fluid which is displaced, and directed upward
when an object is dropped, what is its acceleration at the moment of release? Explain with reasoning.
Examples of like and unlike parallel forces?
Chlorine atom differs from chloride ion in the number of: (1) Proton (2) Neutron (3) Electrons (4) Protons and electrons Ans: Electrons
A simple pendulum Tie a cord at least 2 m long to some object like a stone or a small metal ball. Suspend this in a doorway or from a hook in the ceiling and begin it swinging
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