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An electric load consists of a 4Ω resistance, 6Ω inductive reactance and 8Ω capacitive reactance connected in series. The total impedance of the load is connected across a voltage source of 120V:
a. Compute the power factor of the load.
b. Compute the source current.
c. Compute the real power of the circuit.
d. Compute the reactive power of the circuit.
A 100V dc series motor has an armature resistance of 0.2 ohm and field resistance of 0.25 ohm. The motor runs at a speed of 600 rev/min when the shaft torque is 27.14 Nm. Friction and windage losses at this speed are 300W.
A 200-kVA, 2300\230-V, 60-Hz transformer operating at rated voltage in the step-down mode is supplying 150 kVA at 0.654 power-factor lagging. Assume the transformer is ideal. Determine (a) secondary current; (b) impedance of the load; (c) primary ..
Give a narritve for a cruise control system of a car. Include all relevant inputs and outputs. Design a flowchart and ladder diagram. Every element on the ladder diagram must be labelled and described.
The factorial of a nonnegative integer n is written n! (pronounced "n factorial") and is defined as follows: n!= n(n-1)(n-2)(n-3)....1 (for values of n greater than or equal to 1) and n!= 1 (for n=0) for example 5! = 5x4x3x2x1,
What is the charge density on the surface of the middle sheet facing the right sheet?
Suppose a signal from a vibrating motor is to be sampled discretelywith a digital data acquisition system to determine the RPM of the motor. It is known that the maximum possible RPM is 1800.
A linear time-invariant system has a transfer function with a direct-current gain equal to 2 and a phase angle of 45°. What is the response of this system to the input x(t) = 4 cos(2t)
Use the amplifier of Example 12.4 in a balanced configuration operating from 3 to 5 GHz. Use quadrature hybrids, and plot the gain and return loss over this frequency range. Using microwave CAD software, optimize the amplifier matching networks to..
If a frame is damaged then in this network the receiver sends back a request for retransmission. (For simplicity, assume all these requests arrive back perfectly at the sender). What is the mean number of transmissions required to successfully tra..
a curemt of 1600a exists in a recatangular 0.4 by 16cm bus bar. the current is due to free electrons moving through
What is the maximum value of N0 for an FM cell phone whereby ST=
Generate an M-PAM gray coding using MATLAB: M=2^m, where m=log2(M) and m=number of bits/number of symbols
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