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a line is 845miles in length. the line contains four conductors, each weighing 2526lb per 1000 ft. how many kilo grams of conductor are in the line
The load can be connected in either wye or delta configuration. Calculate the load power and apparent power when connected to a 208V 60Hz supply, with each of wye and delta connection.
A DC circuit has supply voltage 100V, impedance Z= 8+j6Ω. Calculate the stead DC current and power supplied to the circuit
A single phase AC circuit is conected to a 120V, 60Hz. The circuit impedance is Z=8+j6Ω at 60Hz. Calculate the rms phase current, real & reactive power and power factor.
The shunt capacitance of metal work ofeach insulator is 0.26C to earth and 0.15C to line. Find the stringefficiency if a guard ring increases the shunt capacitance to lineof the metal work of the lo
A single core cable for66kV three phase system has a conductor of 2 cm diameter and sheathof inside diameter of 5.3 cm. It is required to have twointer-sheaths so that stress varies between the same
Find the spacing between conductors of three phase transmission line with conductors of diameter 2.5 cm to avoid corona which will take place if the linevoltage exceeds 150kV (rms).
List the eight degenerate two-level forms and show that they reduceto a single operations. Explain how the degenerate two-level formscan be used to extend the number of inputs to a gate.
Determine the corona lossof a three phase, 220kV, 50 Hz and 200km long transmission line of three conductors each of radius 1 cm and spaced 5m apart inequilateral triangle formation. The air tempera
implement the following boolean function F, using two-level forms (a)NAND-AND, (b)AND-NOR,(c)OR-NAND,and(d)NOR-OR: F(A,B,C,D) = Σ(0,1,2,3,4,8,9,12)
Determine the impulse response and the unit step response of the system described by the difference equation. y(n) = 0.6y(n - 1) - 0.08y(n - 2) + x(n)
Implement the following function with a 4-to-1-line multiplexer Draw the truth table and the corresponding block diagramfor the MUX F(x,y, z) = f(1, 2, 6,7)
A 480 V, three phase system is supplying a 10kW heater and a 5kVAR cap bank. draw the power triangle and calculate the line current
A 100kW,230V,shunt generator has Ra=0.05ohm and Rt=57.5ohmassume that htere is negligible voltage drop across the brushes. ifthe generator operates at rated voltage, calculate the following: a) indu
a 3-phase slip ring induction motor gives a reading of 60volts,across a slip ring of open circuit. When at rest with normal statervoltage applied, the rotor is star connected and has an impedanceof
A permanent magnet motor is driving a load that requires 0.08Nm.The motor data is:RA =2W, VA =12v,Kt =0:05Nm/A ,KG = 0:004 V/RPM . Find themotors running speed and the power output.
A permanent magnet generator has Kt = 0:02Nm/A . The terminal voltage is six volts. It is spinning at 2500 rpm. It is connected to a load with a resistance of 30W. Determine the counter torque and t
At a design review for your first engineering project, you presentthe project to a panel of three senior engineers who will vote onwhether your project should be funded or not. The senior engineersw
What is the use of the carry output in a parallel load counter If l have a 3 bit binary parallel load counter do l connectthe count input,and the outputs (Q) from the three flip flops
Consider a DC series motordesigned to operate with VS = 200 V. Suppose the rotorresistance is 0.40 ohms. and the field coil resistance is0.10 ohms . An RPM measurement reveals that when the line cur
An induction motor has thefollowing specifications: a 8-pole squirrel cage rotor, operates at25 hp off of a 220 V line-to-line 3-phase service, 60 Hz, 64 ampsof line current, and under full load run
Design an inverting amplifier using an operational amplifier such that the the voltage gain is 100. Write the formula for the output voltage. Design an adder using an operationalamplifier such that
An induction motor has the following specifications: a 8-polesquirrel cage rotor, operates at 25 hp off of a 220 V line-to-line3-phase service, 60 Hz, 64 amps of line current, and under fullload run
The heart of all motors and generators is a rotating magneticfield. We discussed, covered and derived the equations for arotating magnetic field produced by a symmetric 3-phasestator-winding arrange
It is desired to place the poles of a second order systemso that the time to the peak of the step response is 0.75 sec andso that the settling time (2% criterion) is 3 sec. Plot therequired pole loc