Recent questions tagged electrical

by cynthia ochieng asked Jul 29, 2021 1 view

explain the functions of each block of solar system

by shivamye88 asked Jul 15, 2021 0 views

I need answers of this question

by itszee asked Jun 20, 2021 0 views

What are the test and measuring instrument required in an Electrical depots?
Answer : Ans. Following are the test and measuring instruments required in an Electrical depots. a. Test lamp b. Line Tester c. Continuity tester d. Volt meter e. Ammeter f. Earth megger g. Megger h. Lux meter i. Power analyzer j. Infrared thermometer...

by vimalgrace asked Jun 11, 2021 0 views

In a two-wattmeter method of power measurement, the readings of two wattmeters are equal when power factor is

by davidfesto asked May 29, 2021 0 views

What are the five important of terminals

by mustafa99 asked May 28, 2021 0 views

The input power to a 220 V lap wound shunt D.C motor runs is 11 kW , the speed is 1150 rpm takes 5 A at no load ,shunt field resistance is 110 Ω and armature resistance is 0.5 Ω ... current .assume the information in branch a is normal condition.c-Maximum efficiency before and after adding (R add).

by farah asked Apr 4, 2021 1 view

220kV three phase transmission line is 60 km long. The resistance is 15 Ohms per phase and the inductance is j 30 Ohms. 1- Calculate : voltage regulation, TL line power losses and efficiency when ... for 0.85, calculate zise of the required capacitor  and the same parameters which were in part 1

by chylee hera asked Mar 30, 2021 0 views

Is it possible to apply superposition theorem to nonlinear circuit? If yes, why? and if no, why? Explain

by anonymous asked Mar 27, 2021 0 views

How to replace the electrical wiring in the apartment?
Answer : How to replace the electrical wiring in the apartment? In most cases, when renovating an apartment, a complete replacement of the electrical wiring is required, especially if the house was built in ... Upon completion of the finishing, the new electrical wiring in your apartment is ready for use....

by Reem 10 asked Mar 18, 2021 0 views

V1=?? V2=?? V3=?? 

by Micah asked Mar 16, 2021 1 view

Explain by use of a well labeled diagram distribution line protection coordination landmarks

by Reem20 asked Feb 24, 2021 12 views

Refer to the circuit below. The total absorbed (consumed) power is:

by Reem20 asked Feb 24, 2021 11 views

A battery of e.m.f. 12V supplies a current of 5A for 2 minutes. How much energy is supplied in this time?

by Reem 10 asked Feb 23, 2021 10 views

الرجوع إلى الدائرة أدناه. الطاقة التي يستهلكها العنصر E متساوية.
Answer : The power consumed the element E is equal to the  : P = V x I = 6V x 1 A = 6 W...

by Reem 10 asked Feb 23, 2021 14 views

Refer to the circuit below. The voltage V2, is equal to:
Answer : The answer to this question is -3V. Because 3V is in parallel with v2 and voltages in parallel are equal. But it is in opposite direction so the answer is -3V. ...

by anonymous asked May 19, 2020 309 views

Briefly explain how an electrical generator converts mechanical energy into electrical energy.
Answer : Working principle of DC generator: * Working principle of DC generator is the principle of dynamically induced emf or electromagnetic induction. * According to this principle, when flux is cut by a conductor, an ... , the flux is cut by the armature winding and an emf is dynamically induced in it. ...

by anonymous asked May 17, 2020 121 views

Briefly explain how the power factor of an inductive circuit can be improved.
Answer : As we know that power factor should be corrected to ensure that the current supplied is cost friendly. Meaning the power factor should be around one but not greater than one(0.8-0.9) in a ... an inductive circuit due to the inductive reactance which oppose the change of current in the ac circuit. ...

by anonymous asked May 7, 2020 110 views

Explain the suitability of aluminium as an electrical conductor with respect to its mechanical and electrical properties. 
Answer : Following are requirements of conductor:- i) High conductivity :  Material should have high conductivity, So that * cross section of conductor (size) reduces, * Copper losses reduces, * So Efficiency ... . Boiling point is 1820°C 9. Specific gravity is 2.7 10. High resistance to corrosion. ...

by anonymous asked May 2, 2020 98 views

State different types of electrical signal and draw all types of waveforms.
Answer : Types of electrical signals 1) Sine wave 2) Triangular wave 3) Square wave Waveforms ...

by anonymous asked Apr 27, 2020 61 views

Explain the need of maintenance of electrical equipment.