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A motor with efficiency of 76% supplies 20 hp to a load. it's power factor is 0.6 (lagging). A voltage of 440 VAC (RMS), 60 hz is applied to the motor.
a) what is the real power applied to the motor in Watt?b) What is the reactive power applied to the motor in VARs?c) What is the apparent power applied to the motor in VAs (draw the poer triangle)?
A 190-F capacitance is initially charged to 1190V . At t = 0, it is connected to a 1-k resistance. a) At what time t2 has 50 percent of the initial energy stored in the capacitance been dissipated in the resistance
Let S measure the time-dependent strength of a material under test and So is the initial strength as measured at the beginning of test. Prior tests and evaluations have suggested that the following stress-time relationship appears to work.
Design an input and output circuit state m/c Circuit normally produces an output = 1. It continues to produce output = 1 as long as the following is true: This circuit accepts "at most" one set of sequence "10101" and one set of sequence "01010".
The current in a single-loop circuit is 5.0 A. When an additional resistance of 2.0 O is inserted in series, the current drops to 4.0 A. What was the resistance in the original circuit
Convert the following to hexadecimal 1600 sub script 10 2. compute the sum of the following pairs of signed 6-bits binary numbers. In parallel, show the operands and the answer in decimal. Indicate if or if not an overflow occurs.
An npn differential amplifier with I = 0.5 mA, Vcc = VEE = 2.5 V, and Rc = 8 kohm utilizes BJTs with B=100 and VBE=0.7 V at Ic = 1 mA. Assuming that the bias current is obtained by a simple current source
the binary exponential back-off algorithm is defined by IEE802thus:" The delay is an integral multiple of slot time. The numberof slot times to delay before the nth retransmission attempt ischosen as a uniformly distributed random integer r in the..
What type of cable is necessary for each connection: straight or crossover? You can assume that S1 and S2 do not have the ability to resolve crossovers (called Auto-MDIX).
Calculate The Average voltage generated in 6 turn full pitch coil of a 25 cycle alternator if the flux per pole is 7.2 x 10^5 maxwells. What is the effective voltage if the waveform is sinusoidal.
A copper wire has a diameter of 2.05 mm and carries a current of 5 A due solely to electrons. (these values are common in residential wiring.) Each electron is has a charge of of -1.6 × 10-19 C.
You are a large ISP that doesn't care about your subscribers' network performance. You decide to divide the user ( and the minimal networking equipment required) into 10 distinct group (subnet), each hosting up to 750,000 users.
A 230V shunt motor having an armature resistance of 0.05 W and a field resistance of 75 W draws a line current of 7 A while running light at 1120 rev/min. The line current at a given load is 46 A.
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