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A single-phase transformer has a voltage ratio of 6:1 and the h.v.winding is supplied at 540V.
The secondary winding gives a full load current of 30A at a power factor of 0.8 lagging. Neglecting losses,
Find
(a) The rating of the transformer,
(b) The power supplied to the load,
(c) The primary current
Charging a capacitor: In the diagram below, all of the resistance in the circuit is added together and shown as a single value R. With S 1 closed and S 2 open, the ca
A microphone is attached to a spring that is suspended from the ceiling. Directly below on the floor is a stationary 440 Hzsource of sound. The microphone vibrates up and down in s
Is there any way to improve side- emitting viewing? A side emitting light guide is viewed optimally while the contrast among the optic and background is maximized. When the lig
The forced harmonic oscillations have same displacement amplitude at frequencies ω 1 = 400 Hz and ω 2 = 800 Hz. Evaluate the resonance frequency at which the displacement is maxi
The primary coil of an ideal step-up transformer has 100 turns and the transformation ratio is also 100. The input voltage the power are 220 V and 1100 W respectively. Calculat
what is resistor filter?
if a big person and a small person run up the stairs in the same time, which of them develops the most power
A high voltage applied to a gas discharge tube having neon gas at very low pressure causes a current to flow through the tube. Which particles that flow towards the cathode?
UNIT AND DIMENSION OF DISPLACEMENT. The S1-unit of displacement is metre (m). The dimension of displacement is [L] or [M o LT o ]
YES GRAVITY CAN BAND LIGHT e.g. GRAVITY OF BACK HOLE IS VERY STRONG
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