Can you help by answering this question?

What is the back EMF of a dc motor?

37 views
by

Your answer

Thanks for your contribution. Feel free to answer this question. Please avoid short answer. Your answer is most welcome. Be genuine.

Upload image or document:

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
Are you a robot ? (Y = Yes / N = No)
To avoid this verification in future, please log in or register.

Related questions

1 answer 11 views

Explain the term reactive power. Why it is sometimes essential to measure reactive power?

asked Sep 6, 2018 by Shimroz123
0 answers 30 views
0 answers 19 views

The amount of solar radiation received on a unit area exposed perpendicular to sunlight is termed as : (A) Solar insulation (B) Solar constant (C) Solar radiance (D) Solar insolation

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
1 answer 23 views

Explain the importance of solar power in the energy deficient India.

asked Sep 8, 2018 by Shimroz123
1 answer 9 views

Explain with schematic diagram direct distribution of solar energy.

asked Sep 8, 2018 by Shimroz123
1 answer 22 views

Suggest the energy conservation techniques in following cases : (i) Motor is running with 70% loaded condition. (ii) Motor is continuously loaded at 50%. (iii) Motor runs with 30% loaded condition but sometimes rises to 50% loading condition. (iv) Motor runs continuously under no-load condition.

asked Oct 3, 2018 in Energy Conservation And Audit by Shimroz123
1 answer 11 views

What is renewable source of energy? State two examples for the same.

asked Sep 7, 2018 by Shimroz123
1 answer 16 views

 The disadvantages of renewable source of energy is / are : -  a) intermittency b) lack of dependability c) availability in low energy densities d) all the above

asked Apr 11, 2018 in Electrical Engineering by Shimroz123
2 answers 159 views

What is the difference between renewable and nonrenewable energy sources?

asked Dec 18, 2017 in Renewable energy sources by Quiz
1 answer 46 views

What are the different sources of renewable energy?

asked Dec 18, 2017 in Renewable energy sources by Quiz
1 answer 40 views

Compare conventional energy sources with renewable energy sources on any four points. 

asked Sep 7, 2018 by Shimroz123
1 answer 25 views

In a transformer the energy is conveyed from primary to secondary?

asked Mar 27, 2018 in Transformer by Shimroz123
1 answer 34 views

Reflector mirrors employed for exploiting solar energy are called the  (1) Mantle (2) Heliostats (3) Diffusers (4) Ponds

asked Apr 30, 2018 in Power system by Shimroz123
1 answer 43 views

What are the advantages and disadvantages of solar energy?

asked Dec 19, 2017 in Renewable energy sources by Quiz
1 answer 69 views

What are the disadvantages of using solar energy?

asked Dec 19, 2017 in Renewable energy sources by Quiz
1 answer 56 views

Write how energy can be stored or generated in each of following : i) solar cell ii) geothermal energy iii) hydrogen energy in biomass.

asked Sep 8, 2018 by Shimroz123
1 answer 9 views

The following ____ is termed as permanent memory.  a) Random Access Memory b) Read Only Memory c) Flash Memory d) Cache Memory

asked May 13, 2018 in Computer Engineering by Shimroz123
1 answer 26 views

The noise produced by a transformer is termed as?

asked Mar 19, 2018 in Transformer by Shimroz123
1 answer 16 views

Draw and explain the operation of pressure transducer having diaphragm as a primary sensor and four strain gauges as secondary sensors.

asked Sep 13, 2018 by Shimroz123
1 answer 209 views

Explain working of concentrating type of solar collector.

asked Sep 8, 2018 by Shimroz123
1 answer 16 views

Why the emf of a cell is always greater than its terminal voltage? Explain the same.

asked Jul 5 by Shimroz123
1 answer 110 views

Explain the series and parallel operation of MOSFET. Which is suitable and why?

asked Sep 15, 2017 in Unit 1 by Quiz
0 answers 16 views

The phenomenon of squirrel cage motors sometimes showing tendency to run at very low speed is known as (1) Cogging (2) Crawling (3) Damping (4) Skewing

asked Apr 11, 2018 in Electrical Engineering by Shimroz123
1 answer 14 views

Why energy conservation techniques should be adopted in transformers even though its efficiency is 90%? 

asked Oct 3, 2018 in Energy Conservation And Audit by Shimroz123
1 answer 11 views

Why energy meter is integrating type measuring instrument?

asked Sep 5, 2018 by Shimroz123
1 answer 49 views

Why is it cheaper to transmit electrical energy at high voltage?

asked Mar 10, 2018 in Extra high voltage transmission by Quiz
0 answers 11 views

Explain why potential difference is necessary to produce current in a circuit.

asked Jun 29 by Shimroz123
1 answer 15 views

Explain the following energy conservation techniques: (i) By reducing I2R losses in Trans. system (ii) By optimizing distribution voltage.

asked Oct 3, 2018 in Energy Conservation And Audit by Shimroz123
1 answer 15 views

With example explain how the replacement of lamps in lighting system contributes for energy conservation?

asked Oct 3, 2018 in Energy Conservation And Audit by Shimroz123
1 answer 17 views

Explain with flow chart the energy audit procedure.

asked Oct 2, 2018 in Energy Conservation And Audit by Shimroz123
1 answer 14 views

Explain the role of adequate maintenance of lighting system in energy conservation.

asked Oct 2, 2018 in Energy Conservation And Audit by Shimroz123
1 answer 33 views

Explain the following Energy conservation methods of electrical motor : (a) Rewinding of motors (b) Operating in star mode

asked Oct 1, 2018 in Energy Conservation And Audit by Shimroz123
1 answer 36 views

Explain the need of energy conservation in present scenario.

asked Sep 23, 2018 in Energy Conservation And Audit by Shimroz123
1 answer 17 views

Explain stepwise the “Detailed energy audit” procedure.

asked Sep 23, 2018 in Energy Conservation And Audit by Shimroz123
1 answer 29 views

Explain the “mitigation of power theft” and “faulty meter replacement” for energy conservation techniques to reduce commercial losses. 

asked Sep 22, 2018 in Energy Conservation And Audit by Shimroz123
1 answer 18 views

State the principle of solar cell. What is necessity of series and parallel connection of solar cells.

asked Sep 7, 2018 by Zeeshan
0 answers 17 views

The Fill Factor of a silicon solar cell is approximately   (a) 1 (b) 0.7 (c) 0.5 (d) 0 

asked Apr 10, 2018 in Electrical Engineering by Shimroz123
1 answer 29 views

Which of the following semiconductor materials is (are) used for manufacturing solar cells?  (1) Gallium arsenide (2) Indium arsenide (3) Cadmium sulfide (4) All of these

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
1 answer 19 views

Explain why filters are used in signal conditioning.

asked Sep 14, 2018 by Shimroz123
1 answer 8 views

Explain why LVDT gives a residual output at null position. State its 2 applications.

asked Sep 13, 2018 by Shimroz123
2 answers 68 views

Explain how technical losses can be reduced by use of energy efficient transformer in Transmission and Distribution system.

asked Oct 3, 2018 in Energy Conservation And Audit by Shimroz123
1 answer 19 views

Explain parallel operation of transformer in context of energy conservation.

asked Oct 2, 2018 in Energy Conservation And Audit by Shimroz123
1 answer 12 views

Explain energy conservation technique in induction motor by improving mechanical power and transmission efficiency.

asked Oct 1, 2018 in Energy Conservation And Audit by Shimroz123
1 answer 27 views

Draw block diagram of microprocessor based centrallized control equipment of energy conservation and explain it.

asked Sep 23, 2018 in Energy Conservation And Audit by Shimroz123
1 answer 54 views

Explain following techniques related to energy conservation in transmission and distribution system. (i) By balancing phase currents (ii) Variable technical losses (I2R losses).

asked Sep 22, 2018 in Energy Conservation And Audit by Shimroz123
1 answer 650 views

Explain any two energy conservation techniques in fan.

asked Sep 22, 2018 in Energy Conservation And Audit by Shimroz123
1 answer 31 views

Explain energy conservation method in lighting system by using installation of separate transformer / servo stabilizer.

asked Sep 22, 2018 in Energy Conservation And Audit by Shimroz123

Welcome to electronics2electrical.com here you can ask questions related to electrical, electronics, mechanical, telecommunication, instrumentation, computer, mathematics, physics etc.
Be respectful to all the members. Do not copy and paste the answers from other websites which have copyright content. While asking question give full details about it.

Categories

Most popular tags

power motor dc circuit transformer voltage current used system phase resistance factor synchronous load ac energy induction electric generator series frequency between speed capacitor use electrical meter line difference control type mosfet transmission magnetic plant high single instrument bjt unit source advantages function diode and machine winding field define torque parallel amplifier supply shunt thyristor motors electricity arduino maximum time relay armature problem value on transformers types coil diagram state flow ratio material three formula starting direction theorem method emf operating efficiency digital wave microprocessor test instruments inductance loss measure operation connected signal low applications effect single-phase network temperature working constant losses different law wattmeter measuring compare controlled breaker drive device logic rc full switch flux wire resistivity disadvantages free of materials machines angle force converter conductor transistor gain open protection scr core measurement number bridge principle generators reactance circuits negative the friction iron loop short pole battery conservation steam resistors hysteresis computer using analog lines secondary station gate a rectifier inverter linear induced relays nuclear capacitance basic characteristics design direct work rotor electronics ammeter forces diesel damping rlc connection factors capacitors minimum insulation moving regulation running self systems air fault range main stability quality starter igbt eddy alternator ideal rl average 3-phase plants arc thermal error fuzzy biasing dielectric pressure balanced superposition errors copper rotation feedback impedance measured electronic electrons charge inductive transfer explain start off back curve over solar is three-phase tariff locomotive peak bias zener engineering commutator surge conductors rating universal potentiometer density permanent mechanical transducer capacity memory adc excitation two fuse pure harmonics application semiconductor inductor internal pmmc reaction welding resonance traction permeability breakers rms designed electromagnetic si generation brushes switching capacitive shaded rate 1 distribution resistor methods delta star oscillator reluctance simplification algebra 8085 boolean weston dynamometer insulating strength installation definition fuel heating earth units

8,530 questions

7,130 answers

135 comments

3,090 users

...