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An alternator is supplying a load of 300 kW at a p.f. of 0·6 lagging. If the power factor is raised to unity, how many more kilowatts can alternator supply for the same kVA loading ?
How to mitigate effects of very fast transients (VFT) on HV equipment ?
a) What is the minimum bandwidth that they need b) If the carrier amplitude in the transmitter (before the power amplifier at the output) is 5V, what is the maximum signal amplitude they can permit in the transmitter without introducing distortion
THE Number of pumps in use at both a six-pump station and a four-pump station will be determined. Give the possible values for each of the following random variables. a. T = the total number of pumps in use
A certain circuit is constructed with four elements inparallel: a 4 ohm resistor, a 10 ohms resistor, 1 uF capacitator,and a 2mH inductor. (a) compute α. (b) compute ω0 (c) is the circuit underdamped, critically damped oroverdamped Explain
When the motor runs at 1710 rpm, the line currentdrawn from the supply is 78 A at 0.85 PF lagging. Given that,stator iron loss is 2kW, windage and friction losses are 1.2kW andresistance between two stator terminals = 0.4W
The noise signal is measured to be 1.35 V. The output difference signal is 3.95 V and the common-mode output signal is0.95 mV. Determine the common-mode gain, the differential mode gain, the CMRR, and the CMR (in dB) for the amplifier.
The generator voltage is 120 V and the lamp voltage should be 110 V or more. Calculate the current drawn by each lamp if its voltage is 110 V and its power is 100 W. Calculate the current in the two-wire line. Calculate the maximum resistance of t..
The springs effect is addressed below. As a relay some contacts are connected to, and move with, the armature. Other contacts are stationary and would make or break contacts as the armature moves.
Two loudspeakers, one of them generates sound 400W power the other with 100W. The sound is generated isotropically from each loudspeaker. A listener is seated 20 m from the 100 W loudspeaker and 40 m from the other loudspeaker.
A system samples a sinusoid of frequency 480 Hz at a rate of 100 Hz and writes the sampled signal to its output without further modification. Determine the frequency that the sampling system will generate in its output.
2) If a 0-20V voltmeter has an accuracy of 1 percent full scale, between what limits may the actual voltage lie when the meter indicated 12V? What is the range of error for this reading?
A 5-volt intelligence amplitude causes the frequency to change to ± 25 kHz. What will be the carrier frequency variation corresponding to an intelligence amplitude of 10 volts
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