search
person
What is harmonic in power quality?

Related questions

Description : What are the power quality disturbance?

Description : What is a power quality analyzer?

Description : What is power quality meter?

Description : What are the different power quality issues?

Description : What is good power quality?

Description : What is power quality monitoring?

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 .

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

Description : The time period of third harmonic of power supply frequency, in milliseconds, is (A) 20 (B) 3.33 (C) 6.66 (D) 60

Answer : The time period of third harmonic of power supply frequency, in milliseconds, is 6.66 

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

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.

Description : What is the harmonic filter?

Answer : It is being used to supress the input voltage distortion at input side of any electrical equipment. This distortion is created by other electrical loads like motor, drives etc nearby connected with ... for a range of harmonics or specific harmonics like 3rd harmonics  5th harmonics, 7th harmonics. 

Description : To get minimum harmonic distortion in the output, a 3-Ф to 3-Ф cyclo-converter requires :  (A) 12 SCRs (B) 18 SCRs (C) 36 SCRs (D) 72 SCRs

Answer : To get minimum harmonic distortion in the output, a 3-Ф to 3-Ф cyclo-converter requires : 36 SCRs

Description : The second harmonic distortion is defined as the A) Ratio of amplitude of second harmonic component in the output to that of the fundamental frequency B) Harmonic distortion due to only second harmonic component C) Sum of distortion of first and second harmonic components in the output 

Answer : The second harmonic distortion is defined as the Ratio of amplitude of second harmonic component in the output to that of the fundamental frequency

Description : The fractional-pitch used for eliminating 7th harmonic from the emf wave of an alternator is (A) 2/3 (B) 5/6 (C) 7/8 (D) 6/7

Answer : The fractional-pitch used for eliminating 7th harmonic from the emf wave of an alternator is 6/7

Description : Explain the sinusoidal harmonic reduction techniques for cylcoconverters.

Description : How to choose quality upholstery for your furniture?

Answer : Often in a store, customers pay attention to the color of the upholstery. Usually, the color is chosen that fits perfectly into the interior of the room. Today the stores offer a wide ... has acquired all the properties of natural leather. Outwardly, such material often looks very high quality.

Description : How to choose a quality raincoat?

Answer : A raincoat is an outer garment most often made of waterproof material. It was invented back in the days of the Byzantine Empire, as a means of protection from bad weather (rain and wind). ... correct choice of a raincoat are that it should be not only practical and comfortable, but also stylish.

Description : How do I choose quality cutlery?

Answer : At first glance, it may seem that there is nothing simpler than a spoon or a stainless steel knife, but you need to approach the choice of cutlery for the home responsibly. These ... superfluous. The documents must contain the manufacturer's details and important information about the product.  

Description : The higher the price, the better the quality, or how not to waste your money

Answer : The higher the price, the better the quality, or how not to waste your money A headache for every homeowner is the need to protect him from bad weather and intruders. You can, of course, take ... is obliged to give a guarantee for its products, which may slightly increase the value of the goods.

Description : How to check the quality of installation of interior doors?

Answer : How to check the quality of installation of interior doors? Interior doors are being installed at the final stage of renovation. It can take up to 5 hours to install one door. But, ... tips will help you avoid possible problems and properly control the quality of installation of interior doors.

Description : Quality control is aimed at: a. Maintaining the desired quality b. Exceeding the desired quality c. Continuously improving the quality d. Following the quality

Answer : Quality control is aimed at: a. Maintaining the desired quality b. Exceeding the desired quality c. Continuously improving the quality d. Following the quality

Description : Explain various performance parameter used to evaluate the quality of inverters.

Description : What would cause a power surge in a house?

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

Description : What is the use of power factor correction?

Description : What is the best power factor?

Answer : It is unity power factor but difficult to achieve in dynamic loads

Description : What is power factor angle?

Description : What is a digital power meter?

Description : What is an RF Power Meter?

Description : What causes random power outages?

Description : What is the advantage of high power factor?

Answer : Reduced copper losses Smaller conductor size Improve voltage regulation Increase system capability Less energy bill

Description : What is power logger?

Description : What can you do to prevent a power surge?

Description : What is meant by power dip?

Description : Can you have a power factor greater than 1?

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

Description : Why do we need to correct power factor?

Description : How do you measure power factor?

Answer : P= 1.83*V*I*[email protected] where P is power           V is voltage            I is current           COS @ is P.F [email protected]= P/(1.83*V*I)  in other way cos @ = true power/apparent power

Description : Can a power surge erase a hard drive?

Description : Can power surge damage your computer?

Description : How often do power surges occur?

Description : What is the choice of size and number of generator units in interconnected power system?

Answer : Choice of Size and Number of Generating Units: 1. The size/rating and number of generating units in such way that they approximately match with the load curve as closely as possible. 2. In ... , if power plant is connected to grid system then generating unit of higher capacity can be installed.

Description : What is the purpose of the turbines in coal fired power plants?

Description : What is the largest power plant in the world?

Answer : japam

Description : What is sag in power system?

Answer : Sag is a catenary curve in between two points of supporters.and also we can say the lowest point of the conductor in between the two points of supporters. 

Description : What is meant by feeder in power system?

Answer : A feeder line is a peripheral route or branch in a network which connects smaller or more remote nodes with a route or branch carrying heavier traffic. The term is applicable to any system based on a hierarchical network.

Description : What is microgrid in power system?

Description : What are the types of power losses in inductor?

Answer : Copper losses, Eddy current loss, and hysteresis loss are the types of power losses in inductor.

Description : What is the value of Beta in power BJT?

Answer : The beta value in power BJT is 5 to 10.

Description : What is drive circuit in power electronics?

Answer : Driver is used for Motion Control through the use of power electronics.

Description : What is the value of capacitance required to improve power factor from 0.7 to 0.9. Given that: Real power = 50 W Vrms of the source = 120 Frequency = 50 Hz   #powerfactor

← Prev Question Next Question →
editAsk a Question
...