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Solve Problem 4.7 using MATLABTM for a power factor of 0.7.
Problem 4.7
A 500 KVA, 23001230 V single phase transformer delivers full rated KVA at 0.8 p.f. lagging to a load at rated secondary voltage. The primary voltage magnitude is 2400 V under these conditions and the efficiency is 0.97. Find the equivalent circuit parameters of this transformer neglecting the no load circuit.
State Gauss' law for the magnetic field in differential form. How is it derived from its integral form?
For an armature-control DC motor the following parameters are given: ea=22V, f=5x10^-3 onz-in/rad/sec, J=4.27X10^-4 in-onz-sec^2, La=0, Ts=10 onz-in (stall torque), wo= 480 rad/sec (no load speed), K=7.66 in-onz/amp.
a 350v d.c. shunt motor has an armature resistance of 0.18 ohm. if the field current is 30a and the load current is
Zener diode, Can You show me how to solve the following: If a 5k resitor is connected between the cathode of a 6.2V ZENER diode and a 12V power supply.
The voltage drops across three resistors in series are measured to be 10.0V, 15.0V, and 25.0V. If the largest resistor is 47.0ohm, what is the value of the smallest resistor
The couple M is applied to a beam of the cross section shown in a plane forming an angle b with the vertical.
The plates of a parallel-plate capacitor have areas of 40cm2 and are separated by 0.2mm of waxed paper (K=2.2). Find its capacitance.
using diagrams, discuss how an LED and electromechanical relays are interfaced with the microcontroller in an electrical circuit.
a conductor is connected to a battery and placed between two compasses. An electric current is then passed through the conductor. In what direction do the poles of the compasses point.
A sinusoidal voltage has maximum amplitude of 90 V. The voltage passes through one complete cycle in 64 ms. What is the frequency of the voltage in hertz
A high-pass filter with C=30pF. R= 40 kohm A) What is the cutoff frequency The output of this filter is connected to an amplifier with an input resistance of 60 kohm. B) Sketch and label the new circuit. C) What is the new cutoff frequency
WHAT ELECTRICAL PARAMETER DOES AN OHMMETER MEASURE AND WHAT ARE ITS UNITS. SHOW BOTH NAME AND SYMBOL FOR THE PARAMETER AND ITS UNITS.
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