What is meant by power dip?

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asked Mar 10, 2018 by anonymous

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What is the advantage of high power factor?

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What is harmonic in power quality?

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What are the power quality disturbance?

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What are the different power quality issues?

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What can you do to prevent a power surge?

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asked Mar 10, 2018 by anonymous

What would cause a power surge in a house?

Last answer: If your neibour / other flat owners / your maintainer staff switch on any type of inductive load that can cause power surge / dip

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asked Mar 10, 2018 by anonymous

What is meant by KVA?

Last answer: KVA - kilo volt ampere Used to specify the transformer details

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What is meant by a voltage surge?

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asked Sep 10, 2017 by anonymous

why power quality is important?

Last answer: Power quality is important because the electrical appliances will works better and will be safer and less loss in energy. Low energy waste and improves stability of power system .

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asked Mar 10, 2018 by anonymous

Can you have a power factor greater than 1?

Last answer: We cannot have power factor greater than 1. As it is a measure of cosine of angle between voltage and current.

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asked Mar 10, 2018 by anonymous

Why do we need to correct power factor?

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asked Mar 10, 2018 by anonymous

How do you measure power factor?

Last answer: P= 1.83*V*I*COS@ where P is power V is voltage I is current COS @ is P.F COS@= P/(1.83*V*I) in other way cos @ = true power/apparent power

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asked Mar 10, 2018 by anonymous

Can a power surge erase a hard drive?

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asked Mar 10, 2018 by anonymous

Can power surge damage your computer?

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asked Mar 10, 2018 by anonymous

How often do power surges occur?

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how to monitor power quality?

Last answer: By applying various power quality monitoring devices and using telecommunication technique .

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What is mean by power switching devices?

Last answer: Power switching devices means like BJT, power MOSFET, SCR, TRIAC, GTO etc.

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What is meant by hydro power plant?

Last answer: The potential energy of water is coverted into kinetic energy by flowing it from height and with the help of k.e. Turbines are rotate at particular speed it means the k.e. Of water is again ... simply define the hydro power plant as it give the conversion of P.E OF water into electrical energy

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asked May 8, 2018 by anonymous

_______ electric power is the most common method used by electrical grids to transfer power.

_______ electric power is the most common method used by electrical grids to transfer power. (A) One-phase (B) Two-phase (C) Three-phase (D) None of the above

Last answer: Three-phase electric power is the most common method used by electrical grids to transfer power.

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asked Apr 30, 2018 by anonymous

The stability of the power system is not affected by

The stability of the power system is not affected by (1) generator reactance (2) line reactance (3) line losses (4) output torque

Last answer: The stability of the power system is not affected by line losses

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asked Apr 28, 2018 by anonymous

In voltage source converter based HVDC transmission system the active power is controlled by changing

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Last answer: In voltage source converter based HVDC transmission system the active power is controlled by changing phase angle of the converter ac input voltage

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asked Apr 28, 2018 by anonymous

The power consumed by a balanced 3-ph load is measured by two-wattmeter method. The meter readings are

The power consumed by a balanced 3-ph load is measured by two-wattmeter method. The meter readings are 8 kW and 4 kW. The power factor of the load is (A) zero (B) 0.5 (C) between zero and 0.5 (D) between 0.5 and unity

Last answer: The power consumed by a balanced 3-ph load is measured by two-wattmeter method. The meter readings are 8 kW and 4 kW. The power factor of the load is between 0.5 and unity

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asked Apr 28, 2018 by anonymous

steady-state stability of a power system is improved by

Last answer: steady-state stability of a power system is improved by using double circuit line instead of single circuit line

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asked Mar 26, 2018 by anonymous

The mechanical power developed by the armature of a d.c. motor is equal to?

Last answer: The mechanical power developed by the armature of a d.c. motor is equal to armature current multiplied by back e.m.f.

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asked Mar 25, 2018 by anonymous

The apparent power drawn by an A.C. circuit is 10 kVA and active power is 8 kW. The reactive power in the circuit is?

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asked Mar 25, 2018 by anonymous

The input of an A.C. circuit having power factor of 0.8 lagging is 40 kVA The power drawn by the circuit is?

Last answer: The input of an A.C. circuit having power factor of 0.8 lagging is 40 kVA The power drawn by the circuit is 32 kW.

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asked Mar 25, 2018 by anonymous

Power factor of an inductive circuit is usually improved by connecting capacitor to it in?

Last answer: Power factor of an inductive circuit is usually improved by connecting capacitor to it in parallel.

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In case of locomotives the tractive power is provided by?

Last answer: In case of locomotives the tractive power is provided by double cylinder, double acting steam engine.

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The electrical power to a meggar is provided by?

Last answer: The electrical power to a meggar is provided by permanent magnet D.C. generator.

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The mechanical power developed by a shunt motor will be maximum when the ratio of back e.m.f. to applied voltage is?

Last answer: The mechanical power developed by a shunt motor will be maximum when the ratio of back e.m.f. to applied voltage is 0.5.

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asked Mar 19, 2018 by anonymous

The maximum load that a power transformer can carry is limited by its?

Last answer: The maximum load that a power transformer can carry is limited by its voltage ratio.

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How much electricity is produced by a power plant?

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Find power delivered by voltage source

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Explain energy conservation technique “by improving power quality” for induction motor.

Last answer: Energy conservation method in induction motor by improving power quality: Electrical energy can be conserved by improving the power quality. It can be achieved by avoiding voltage unbalance, maintaining ... losses can be minimized by using harmonic filter thus reducing the harmonics in the system.

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asked Apr 26, 2018 by anonymous

The resolving power of a spectrometer consisting of collimator, a grating and a telescope can be increased by

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Last answer: The resolving power of a spectrometer consisting of collimator, a grating and a telescope can be increased by decreasing the period of the grating

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asked Mar 21, 2018 by anonymous

In a 3-phase power measurement by two wattmeter method the reading of one of the wattmeter was zero...

In a 3-phase power measurement by two wattmeter method the reading of one of the wattmeter was zero. The power factor of the load must be?

Last answer: In a 3-phase power measurement by two wattmeter method the reading of one of the wattmeter was zero. The power factor of the load must be 0.5.

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asked Mar 21, 2018 by anonymous

In a 3-phase power measurement by two wattmeter method, both the wattmeters had identical readings...

In a 3-phase power measurement by two wattmeter method, both the watt meters had identical readings. The power factor of the load was?

Last answer: In a 3-phase power measurement by two wattmeter method, both the watt meters had identical readings. The power factor of the load was unity.

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asked Mar 20, 2018 by anonymous

Approximate estimation of power demand can be made by?

Last answer: Approximate estimation of power demand can be made by load survey method, statistical methods, mathematical method, economic parameters.

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What is meant by power dip?

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