Problem A delta connected capacitor bank is now installed in parallel with the combined- motor load in the previous problem. (a) What value of capacitive reactance is required in each leg of the capacitor bank to make the source power factor unity? (b) Determine the magnitude of the line current delivered by the source with the capacitor bank installed.

In a certain sub-station, there are 5 d.c. shunt generators in parallel, ench having an armature resistance of 0.1 0, running at the same speed and excited to give equal inducnd emfs Each generator supplies an equal share of a total load of 250 kW at a terminal voltage of 500 V into a load of fixed resistance. If the field current of one generator is raised by 4%, the others remaining unchanged, calculate the power output of each machine and their terminal voltages under these conditions Assume that the speeds remain constant and flux is proportional to field current

I already solved for the 0.8pf lagging. My question is for voltage regulation with 0.8pf leading! Thank you! Example is from in class

A single-phase motor takes 10A at a power factor of 0.7 lagging when connected to a 230V, 50 Hz supply. A capacitor bank is connected in parallel with the motor to raise the power factor to unity.i) Draw the phasor diagram before and after power factor correction with the supply voltage taken as the reference phasor. ii) Calculate the percentage change in the supply current after power factor correction.iii) Calculate the value of capacitance required.

A DC series generator is supplying a current of 5A to a series lighting system through a feeder ofto total resistance, 1.0 ohm. The terminal voltage is 2500 V. The armature and series fieldresistances are respectively 18 and 15 ohms respectively. A 30-ohm diverter resistance isshunted across the series field. Determine the power developed in the armature of thegenerator?

A: A synchronous generator of 100 MVA, 22 kV, and 0.25 pu transient reactance supplies a motor of 50 MVA, 22 kV, and 0.2 pu transicnt reactance. The motor is drawing 40 MW at 0.8 power factor leading and terminal voltage of 21 9 kV. The line connecting them has a reactance of 0,05 pu on a base of 100 MVA. Find the transient currents in the generator, the motor, and the fault when a 3-ph fault occurs at the motor termınals Take Sa 100 MVA, V = 22 kV, and use the internal voltages of the machines method. (1-2)

Two identical 20 MW three-phase alternators operate in parallel. The governor of first machine is such that the frequency drops uniformly from 50 Hz on no-load to 48 Hz on full load. The corresponding uniform speed drop of the second machine is from 50 Hz to 47.5 Hz. How will the two machines share a load of 30 MW?

There are two alternators, 100kW, 3phase in parallel are driven by shunt motors whose speed load characteristics are as follows: Alternator No. 1, no-load speed 600rpm and the full-load speed 530 rpm, while alternator No. 2, no-load speed 590 rpm and full-load speed 550rpm while alternator 2, no load speed 590 rpm and full load speed 550 rpm. What is the greatest load that can be delivered without overloading either alternator?

Please answer the question by showing step by step and explaining each step with details, please?  Especially, by explaining why you used that formula or calculations. Thanks in advance.   This question is related with electromechanical energy conversion (electrical electronic engineering).

Sheet no.5 Q1)two dc shunt generators operating in parallel supply a total load current of (200 A ). The terminal voltage of one generator falls uniformly from ( 240 V) to ( 225 V) when delivering (120A) The terminal voltage of the second generator falls uniformly from (230V) to (215 V ) when delivering (100 A). find the load current shared by each generator and the bus-bars voltage ? U chunt generators running in parallel supply a total load