An industrial plant consisting primarily of induction motor loads absorbs 1200kW at 0.65 power factor lagging....
An industrial plant consisting primarily of induction motor loads absorbs 1200kW at 0.65 power factor lagging. Compute the required kVA rating of a shunt capacitor to improve the power factor to 0.95 leading.
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An industrial plant consisting primarily of induction motor
loads absorbs 1200kW at 0.65 power factor lagging....
3 phase, 37.3 Kw, 440 V, 50 Hz induction motor operates at full load with efficiency...
3 phase, 37.3 Kw, 440 V, 50 Hz induction motor operates at full load with efficiency 89% and power factor 0.85 lagging. Calculate: A) The total KVA rating of capacitor required to rise full load power factor to 0.95 lagging. B) What is capacitance per phase if capacitor: 1) Delta connected. 2) Star connected.
An industrial load absorbs 400 KVA at a power factor inductive of 40% at 5 KV...
An industrial load absorbs 400 KVA at a power factor inductive
of 40% at 5 KV and 60 HZ power line. To improve the power factor up
to 85% inductive, what should be the Q delivered and the value of
necessary capacitor to connect in parallel with that industry?
Problem #5: An industrial load absorbs 400 KVA at a power factor inductive of 40% at 5 KV and 60 HZ power line. To improve the power factor up to 85%...
Problem #1: A 25 KW motor with lagging power factor of 0.75 in a manufacturing plant...
Problem #1: A 25 KW motor with lagging power factor of 0.75 in a manufacturing plant is running from a 240V, 60 Hz. power line. The utility company is going to impose penalty on their utility bill unless they improve their power factor to 0.9 (lagging). Determine: a) The current reactive power(Q) and the improved Q of the motor b) The size of the capacitor needed for the correction of the power factor.
An induction motor draws 1.0 kW at 0.8 lagging power factor from a 250 V, 60...
An induction motor draws 1.0 kW at 0.8 lagging power factor from a 250 V, 60 Hz source. [38] (a) What value of capacitance must be placed in parallel with the motor to raise the line power factor to 93% lagging? (b) With the capacitor in service, what are the magnitudes of the motor current, capacitor current, and line current? Solution:
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)
QUESTION 6 (MULTI-PHASE SYSTEMS) A 400 v, 50 Hz, three-phase distribution system supplies a 20 kVA, three-phase induction motor load at a power factor of 0 8 lagging, and a star-connected set of...
QUESTION 6 (MULTI-PHASE SYSTEMS) A 400 v, 50 Hz, three-phase distribution system supplies a 20 kVA, three-phase induction motor load at a power factor of 0 8 lagging, and a star-connected set of impedances, each having a resistance of 10 Ω and an inductive reactance of 8 Ω Calculate the capacitance of delta-connected capacitors required to improve the overalil power factor to 0 95 lagging [14] TOTAL 1001
QUESTION 6 (MULTI-PHASE SYSTEMS) A 400 v, 50 Hz, three-phase distribution system...
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
An additional motor load of 20kW (including losses) is to be added to an existing load...
An additional motor load of 20kW (including losses) is to be added to an existing load of 100 kVA power factor lagging. The new load my be: a) An additional motor costing $ 200 which is fitted with loss factor capacitor costing $ 5 per kVA to improve its power its power factor form 0.8 to 0.95 lagging, or b) A synchronous induction motor costing $ 10 per kVA which can be excited so that the overall total load kVA...
3- Two balanced Y-connected loads in parallel, one drawing 25 kW at 0.6 power factor lagging...
3- Two balanced Y-connected loads in parallel, one drawing 25 kW at 0.6 power factor lagging and the other drawing 15 kVA at 0.8 power factor leading, are supplied by a balanced, three-phase, 480-volt source. (a) Draw the power triangle for each load and for the combined load. (b) Determine the power factor of the combined load and state whether lagging or leading. (c) Determine the magnitude of the line current from the source. (d) ∆- connected capacitors are now...
Question 5 A 5.2 hp (1hp=746W) motor with a 0.65 lagging power factor and an efficiency...
Question 5 A 5.2 hp (1hp=746W) motor with a 0.65 lagging power factor and an efficiency of 90% is connected to a 230V, 50Hz supply. 5.1 Establish the power triangle for the load. (5) 5.2 Determine the power-factor capacitor that must be placed in parallel with the load to raise the power factor to unity. (5) 5.3 Determine the change in supply current from the uncompensated to the compensated system. (5) 17 5.4 Find the network equivalent to the above.
An industrial load absorbs 400 KVA at a power factor inductive
of 40% at 5 KV and 60 HZ power line. To improve the power factor up
to 85% inductive, what should be the Q delivered and the value of
necessary capacitor to connect in parallel with that industry?
Problem #5: An industrial load absorbs 400 KVA at a power factor inductive of 40% at 5 KV and 60 HZ power line. To improve the power factor up to 85%...
Problem #1: A 25 KW motor with lagging power factor of 0.75 in a manufacturing plant is running from a 240V, 60 Hz. power line. The utility company is going to impose penalty on their utility bill unless they improve their power factor to 0.9 (lagging). Determine: a) The current reactive power(Q) and the improved Q of the motor b) The size of the capacitor needed for the correction of the power factor.
An induction motor draws 1.0 kW at 0.8 lagging power factor from a 250 V, 60 Hz source. [38] (a) What value of capacitance must be placed in parallel with the motor to raise the line power factor to 93% lagging? (b) With the capacitor in service, what are the magnitudes of the motor current, capacitor current, and line current? Solution:
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)
QUESTION 6 (MULTI-PHASE SYSTEMS) A 400 v, 50 Hz, three-phase distribution system supplies a 20 kVA, three-phase induction motor load at a power factor of 0 8 lagging, and a star-connected set of impedances, each having a resistance of 10 Ω and an inductive reactance of 8 Ω Calculate the capacitance of delta-connected capacitors required to improve the overalil power factor to 0 95 lagging [14] TOTAL 1001
QUESTION 6 (MULTI-PHASE SYSTEMS) A 400 v, 50 Hz, three-phase distribution system...
Question 5 A 5.2 hp (1hp=746W) motor with a 0.65 lagging power factor and an efficiency of 90% is connected to a 230V, 50Hz supply. 5.1 Establish the power triangle for the load. (5) 5.2 Determine the power-factor capacitor that must be placed in parallel with the load to raise the power factor to unity. (5) 5.3 Determine the change in supply current from the uncompensated to the compensated system. (5) 17 5.4 Find the network equivalent to the above.
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