electrical engneer
Two alternators A and B are in parallel and supplying a 600-V,60 Hz bus load consisting of a
270 kVA unity power factor load a group of induction motors totaling 420 kVA at 89.4
percent power factor and a synchronous motor that draws 300kVA at 92.3 percent power
factor leading. If the machine A is carrying 60 percent of the total active power load at a
power factor of 70.4 percent lagging, determine the active and reactive components supplied
by machine B.
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QUICK QUIZ: 1. As excitation current was decreased from 1.0 amps to pull-out, the stator current:...
QUICK QUIZ: 1. As excitation current was decreased from 1.0 amps to pull-out, the stator current: (a) Went up then down. (b) Went down then up. (c) Remained the same. 2. At the lowest point on the stator current curve: (a) Current is leading voltage. (b) Current is lagging voltage. (c) Current is in-phase with voltage. 3. Normal excitation is when the synchronous motor has: (a) Unity power factor. (b) Leading power factor. (e) Lagging power factor. Op 100 AC...
P2. (50p) A 100 kVA, 400 V synchronous machine has the following equivalent circuit parameters: X,...
P2. (50p) A 100 kVA, 400 V synchronous machine has the following equivalent circuit parameters: X, = 2.0.2, R = 0.25 12, PART 1: When the machine is operating as a generator and connected to the infinite bus. a. (10p) What should be the power factor to have zero voltage regulation at 50% load (draw the phasor diagram)? b. (10p) Calculate the percent voltage regulation at full load with 0.9 leading power factor (draw the phasor diagram). PART 2: When...
I want it step by step. Thank u. 2. A synchronous generator is used to supply...
I want it step by step. Thank u.
2. A synchronous generator is used to supply a load drawing S-10 р.u. at a power factor of 0.85 lagging connected to the generator terminals. Assuming the terminal voltage is 1.05 p.u. (a) Determine Ea if the generator is a round rotor machine with synchronous reactance Xs 1.1 p.u. and stator resistance Ra-0.025pu. Sketch a per unit phasor diagram (b) Repeat parts (a) if the machine is supplying a unity power factor...
P3- A source supplies power to the following three load connected in parallel: (1) a light...
P3- A source supplies power to the following three load connected in parallel: (1) a light load drawing 20 kW, (2) an induction motor drawing 10 KVA at 0.90 power factor lagging, and (3) a synchronous motor operating at 10 hp, 85% efficiency and 0.95 power factor leading (1 hp = 0.746 kW), Determine the real, reactive, and apparent power delivered by the source. Also, draw the source power triangle.
P3- A source supplies power to the following three load connected in parallel: (1) a light...
P3- A source supplies power to the following three load connected in parallel: (1) a light load drawing 20 kW. (2) an induction motor drawing 10 kVA at 0.90 power factor lagging, and (3) a synchronous motor operating at 10 hp, 85% efficiency and 0.95 power factor leading (1 hp = 0.746 kW). Determine the real, reactive, and apparent power delivered by the source. Also, draw the source power triangle.
A small factory has different types of loads which are grouped together as follows A) induction...
A small factory has different types of loads which are
grouped together as follows
A) induction motors : 1200 hp, 0.8 lag PF
B) Heating loads: 100kW at unity PF
A 3 phase synchronous motor is installed at the
factory to improve the factory's overall power factor. Calculate
how much reactively power per phase the synchronous motor must
supply to the system to maintain an overall power factor of 0.9
lagging. 1 hp = 0.746 kW
together as follows: a....
A generator is supplying two loads at 2800V and 60 Hz. The loads are: Load 1:...
A generator is supplying two loads at 2800V and 60 Hz. The loads are: Load 1: 10 kVA, at 0.6 pf lagging. Load 2: 12 kW and 10 KVAR inductive a. Calculate the total active and reactive power, and the power factor of the load. S- S, - ST- Pr- PF-
(40%) Problem 2 of 3: An engine-generator set is paralleled with a 13.2 kv, 60 Hz infinite (utili...
please show steps. Thank you.
(40%) Problem 2 of 3: An engine-generator set is paralleled with a 13.2 kv, 60 Hz infinite (utility) bus to deliver power to a 2000 kw plant load at 0.866 lagging power factor. The synchronous generator is wye-connected and rated 3750 kva, 13.2 kv, and 0.8 power factor lagging with 1.0 per unit synchronous reactance and negligible armature resistance. 13.2 kVI 60 Hz I infinite bus utility) rated: 3750 kva 0.8 lag load: 2000 kW...
1. (10 points total) A source supplies power to the following three loads connected in parallel:...
1. (10 points total) A source supplies power to the following three loads connected in parallel: (1) a lighting load drawing 10 kW, (2) an induction motor drawing 10 kVA at 0.90 power factor lagging, and (3) a synchronous motor operating at 10 hp, 85% efficiency and 0.95 power factor leading (1 hp 0.746 kW). (a) Determine the real, reactive, and apparent power delivered by the source. (8 points)
A three-phase induction motor delivers 500 hp at an efficiency of 0.91, the operating power factor...
A three-phase induction motor delivers 500 hp at an efficiency of 0.91, the operating power factor being 0.76 lagging. A loaded synchronous motor with a power consumption of 100 kW is connected in parallel with the induction motor. Calculate the necessary kVA and the operating power factor of the synchronous motor if the overall power factor is to be unity. Answer should be 365 kVA, 0.274
QUICK QUIZ: 1. As excitation current was decreased from 1.0 amps to pull-out, the stator current: (a) Went up then down. (b) Went down then up. (c) Remained the same. 2. At the lowest point on the stator current curve: (a) Current is leading voltage. (b) Current is lagging voltage. (c) Current is in-phase with voltage. 3. Normal excitation is when the synchronous motor has: (a) Unity power factor. (b) Leading power factor. (e) Lagging power factor. Op 100 AC...
P2. (50p) A 100 kVA, 400 V synchronous machine has the following equivalent circuit parameters: X, = 2.0.2, R = 0.25 12, PART 1: When the machine is operating as a generator and connected to the infinite bus. a. (10p) What should be the power factor to have zero voltage regulation at 50% load (draw the phasor diagram)? b. (10p) Calculate the percent voltage regulation at full load with 0.9 leading power factor (draw the phasor diagram). PART 2: When...
I want it step by step. Thank u.
2. A synchronous generator is used to supply a load drawing S-10 р.u. at a power factor of 0.85 lagging connected to the generator terminals. Assuming the terminal voltage is 1.05 p.u. (a) Determine Ea if the generator is a round rotor machine with synchronous reactance Xs 1.1 p.u. and stator resistance Ra-0.025pu. Sketch a per unit phasor diagram (b) Repeat parts (a) if the machine is supplying a unity power factor...
P3- A source supplies power to the following three load connected in parallel: (1) a light load drawing 20 kW, (2) an induction motor drawing 10 KVA at 0.90 power factor lagging, and (3) a synchronous motor operating at 10 hp, 85% efficiency and 0.95 power factor leading (1 hp = 0.746 kW), Determine the real, reactive, and apparent power delivered by the source. Also, draw the source power triangle.
P3- A source supplies power to the following three load connected in parallel: (1) a light load drawing 20 kW. (2) an induction motor drawing 10 kVA at 0.90 power factor lagging, and (3) a synchronous motor operating at 10 hp, 85% efficiency and 0.95 power factor leading (1 hp = 0.746 kW). Determine the real, reactive, and apparent power delivered by the source. Also, draw the source power triangle.
A small factory has different types of loads which are
grouped together as follows
A) induction motors : 1200 hp, 0.8 lag PF
B) Heating loads: 100kW at unity PF
A 3 phase synchronous motor is installed at the
factory to improve the factory's overall power factor. Calculate
how much reactively power per phase the synchronous motor must
supply to the system to maintain an overall power factor of 0.9
lagging. 1 hp = 0.746 kW
together as follows: a....
A generator is supplying two loads at 2800V and 60 Hz. The loads are: Load 1: 10 kVA, at 0.6 pf lagging. Load 2: 12 kW and 10 KVAR inductive a. Calculate the total active and reactive power, and the power factor of the load. S- S, - ST- Pr- PF-
please show steps. Thank you.
(40%) Problem 2 of 3: An engine-generator set is paralleled with a 13.2 kv, 60 Hz infinite (utility) bus to deliver power to a 2000 kw plant load at 0.866 lagging power factor. The synchronous generator is wye-connected and rated 3750 kva, 13.2 kv, and 0.8 power factor lagging with 1.0 per unit synchronous reactance and negligible armature resistance. 13.2 kVI 60 Hz I infinite bus utility) rated: 3750 kva 0.8 lag load: 2000 kW...
1. (10 points total) A source supplies power to the following three loads connected in parallel: (1) a lighting load drawing 10 kW, (2) an induction motor drawing 10 kVA at 0.90 power factor lagging, and (3) a synchronous motor operating at 10 hp, 85% efficiency and 0.95 power factor leading (1 hp 0.746 kW). (a) Determine the real, reactive, and apparent power delivered by the source. (8 points)
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