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Problem 4: A plant consumes 20 kW of power. If the load power factor is 0.9...
A single-phase 400V/200V transformer is supplying a load of 4 kW at 200 volts, 0.9 power...
A single-phase 400V/200V transformer is supplying a load of 4 kW at 200 volts, 0.9 power factor lagging. Considering the transformer to be ideal, answer the following questions The output (secondary) current of this transformer 20.00/_25.84 A 20.00/_-25.84 A 22.22/_-25.84 A 22.22/_25.84 A 12.83/_-25.84 A 12.83/_23.28 A Load impedance in ohms. 8.10+j3.92 9.00-j4.36 3.62-j1.47 9.00+j4.36 4.50+j2.18 8.10-j3.92 The primary current 10.00/_25.84 A 10.00/_-25.84 A 40.00/_-25.84 A 44.44/_-25.84 A 11.11/_25.84 A 11.11/_-25.84 A The load impedance referred to the primary in...
A 50 kW load operates from a 60 Hz and 10kV line with a power factor...
A 50 kW load operates from a 60 Hz and 10kV line with a power
factor of 0.6 lagging. Compute the capacitance that must be placed
in parallel with the load to achieve 0.9 lagging power factor.
In-Class #10 Problem A 50 kW load operates from a 60 Hz and 10 kV line with a power factor of 0.6 lagging. Compute the capacitance that must be placed in parallel with the load to achieve 0.9 lagging power factor.
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.
A single Phase load draws 10 kW from a 410 V line at a power factor...
A single Phase load draws 10 kW from a 410 V line at a power factor of 0.707 lagging. Determine: (a) The rms current (b) The reactive power required by the load (c) We want to correct the power factor to be 0.9 lagging by adding a capacitor, what will be the new reactive power? (d) draw the power triangle with the old and new reactive powers
1. A 3-phase load consumes 90 kW of power at a leading PF of 0.6. Assume...
1. A 3-phase load consumes 90 kW of power at a leading PF of 0.6. Assume a standard frequency of 60 Hz and the load voltage (in each phase) to be 120-Vrms- a. (6) Calculate the 3-phase complex power. b. (4) Draw the 3-phase power triangle and label all sides numerically. c. (5) Calculate the rms load current magnitude for current in each phase.
A building has an overall power factor of 0.8 lagging. The required power factor is 0.9....
A building has an overall power factor of 0.8 lagging. The required power factor is 0.9. The voltage provided to the building is 480 V at 60 Hz, and the building consumes 30,000 VA of power Find the value of the capacitor (in VARs and Farads) you must connect to the load to increase the required power factor of 0.9.
(4) A 2.5 KW electrical motor with 0.9 power factor and 75% efficiency, is supplied with...
(4) A 2.5 KW electrical motor with 0.9 power factor and 75% efficiency, is supplied with single core general purpose PVC cable passing through thermally insulated wall and 20m length. The heater is protected via BS3036 fuse with ambient temperature of 25°C. The ratings of BS3036 are shown in Table 1. The maximum permissible voltage drop is 6% of the rated voltage of 240 V. BS3036 Current ratings (A) 5, 15, 20, 30, 45,60 Table 1 Find: a) The design...
please answer 13.16 at rated load of unity power factor and rated terminal voltage, determine efficienc...
please answer 13.16
at rated load of unity power factor and rated terminal voltage, determine efficienc including field rheostat loss. Ans. 93.139 13.11 A generator under test is rated at 100 KVA, 3-phase, 60-Hz; 2,400 volts. (a) If driven b a de motor unexcited, the motor output is 1.26 KW. (b) If driven by a de motor, generato on open circuit and excited to generate rated potential, the motor output is 2.5 KW. ( Ifdriven by a de motor, generator...
The infinite bus in the Figure operates at 480 V. Load 1 consumes 100 kW at...
The infinite bus in the Figure operates at 480 V. Load 1 consumes 100 kW at 0.9 Pflagging and load 2 consumes 80 KVA O Plagne load is synchronous motor whose real power consumption is 74.6 kW at 0.8 PF leading (a) If the switch was initially open what is the equivalent power factor of the system (b) When the switch is finally closed, what is the new equivalent power factor of the system Bus 1 Load 1 100 KW...
An Inductive load 1 phase pulling power 6 kW on power factor 0.85 lagging and voltage...
An Inductive load 1 phase pulling power 6 kW on power factor 0.85 lagging and voltage 230 V. Find : a) Reactive power and Apparent power consumed by the load b) Load impedance c) Draw the triangle power of the load
A 50 kW load operates from a 60 Hz and 10kV line with a power
factor of 0.6 lagging. Compute the capacitance that must be placed
in parallel with the load to achieve 0.9 lagging power factor.
In-Class #10 Problem A 50 kW load operates from a 60 Hz and 10 kV line with a power factor of 0.6 lagging. Compute the capacitance that must be placed in parallel with the load to achieve 0.9 lagging power factor.
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.
1. A 3-phase load consumes 90 kW of power at a leading PF of 0.6. Assume a standard frequency of 60 Hz and the load voltage (in each phase) to be 120-Vrms- a. (6) Calculate the 3-phase complex power. b. (4) Draw the 3-phase power triangle and label all sides numerically. c. (5) Calculate the rms load current magnitude for current in each phase.
(4) A 2.5 KW electrical motor with 0.9 power factor and 75% efficiency, is supplied with single core general purpose PVC cable passing through thermally insulated wall and 20m length. The heater is protected via BS3036 fuse with ambient temperature of 25°C. The ratings of BS3036 are shown in Table 1. The maximum permissible voltage drop is 6% of the rated voltage of 240 V. BS3036 Current ratings (A) 5, 15, 20, 30, 45,60 Table 1 Find: a) The design...
please answer 13.16
at rated load of unity power factor and rated terminal voltage, determine efficienc including field rheostat loss. Ans. 93.139 13.11 A generator under test is rated at 100 KVA, 3-phase, 60-Hz; 2,400 volts. (a) If driven b a de motor unexcited, the motor output is 1.26 KW. (b) If driven by a de motor, generato on open circuit and excited to generate rated potential, the motor output is 2.5 KW. ( Ifdriven by a de motor, generator...
The infinite bus in the Figure operates at 480 V. Load 1 consumes 100 kW at 0.9 Pflagging and load 2 consumes 80 KVA O Plagne load is synchronous motor whose real power consumption is 74.6 kW at 0.8 PF leading (a) If the switch was initially open what is the equivalent power factor of the system (b) When the switch is finally closed, what is the new equivalent power factor of the system Bus 1 Load 1 100 KW...
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