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Physics
Generator is supplying power to a factory by cables of resistance 20 ohm if the generator is generating 50 kilowatt power at 5000 volt.what is the power receiver factory?
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A 72ohm coil of wire is connected in series with an adjustable resistor (rheostat) whose resistance can be varied from 0 to 88 ohms. If the line potential is 115 volts, calculate (a) the range through which the coil current can
asked by gilberT on August 24, 2014 
Physics
The generator at a power plant produces AC at 24,000 V. A transformer steps this up to 345,000 V for transmission over power lines. If there are 2,000 turns of wire in the input coil of the transformer, how many turns must there
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Which of the following is correct for a stepdown transformer? Number of turns in the primary coil is less than the number of turns in the secondary coil. Stepdown transformer increases the voltage from low value to high value.
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A power station with an efficiency of 0.4 generates 10(to the power of 8)watts of electric power and dissipates 1.5 x 10(to the power of 8) watts of thermal energy to the cooling water that flows through it. Knowing that the
asked by Anonymous on January 1, 2010

science
The potential difference measured across a coil is 20 V when a direct current of 2 A is passed through it. With an alternating current of 2 A at 40 Hz, the p.d. across the coil is 140 V. If the coil is connected to a 230 V, 50 Hz
asked by mpho on July 29, 2015 
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If an electronic circuit experiences a loss of 3 decibels with an input power of 6 watts, what would its output power be, to the nearest watt?
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A current of 6.0 amps passes through a motor that has a resistance of 5.0 ohms. Calculate the power 30 watts 150 watts 180 watts *** 900 watts Thanks
asked by Bubbles on April 22, 2017 
physics
a current of 1.1 A flows through a coil when connected to a 110 V DC source . when 110V 50 Hz AC is applied to the same coil , only 0.5 A current flows . calculate the resistance ,impedance & inductance of the coil.
asked by Kashyap on November 12, 2018 
Physics
Please check my answers: The voltage across a 10ohm resistor carrying 3 amps must be? I got 30 voltsv=?, I=3 amps, R= 16 ohm. v= 30 amps * 10 ohm=30 volts A 4ohm resistor is connected in parallel with a 6 ohm resistor. What is
asked by Shay on October 24, 2007 
Physics
George pushes a wheelbarrow for a distance of 12 meters at a constant speed for 35 seconds by applying a force of 20 newtons. What is the power applied to push this wheelbarrow? A. 1.2 watts B. 3.4 watts C. 6.9 watts D. 13 watts
asked by fredrick on March 19, 2013
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