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Electrical Engineering Questions
Total questions: 4237
How can the power factor be calculated without using a power factor meter?Popularity: 175
How do you measure no-load current in a stabilizer?
Popularity: 149
If you were to use two different gauge sizes of cable per phase of a three phase electricity installation would the smaller gauge cable get hotter?
Popularity: 146
What is Ohm's law?
Popularity: 108
How do you convert or rewire a 5hp 3 phase motor to single phase motor?
Popularity: 60
A sine wave of 17 volts peak is equivalent to how many volts RMS?
Popularity: 58
How does 277 and 440 3 phase work and how is it different from 120 and 220 single phase?
Popularity: 52
Is it possible to run a three phase motor out of a 100A household panel?
Popularity: 41
How do you connect a single phase motor to a three phase power supply in UK?
Popularity: 40
What is Miller's Theorem?
Popularity: 35
Can you explain the construction and method of operation of an Electric Bell?
Popularity: 31
Is low power factor good or bad to the power company or consumer?
Popularity: 30
Is it OK to join aluminum wire to copper wire using a junction box?
Popularity: 30
How does 3-phase electricity from power companies get turned into single-phase for home use?
Popularity: 30
Washington american global university available in us or not that university acrediated or not?
Popularity: 28
If u are measuring the voltage of a three phase power system you take only two phase in account then why there is a need for third phase?
Popularity: 28
The purpose of the bus bar protection unit is to isolate any bus by tripping its contactor or isolate a faulty bus in the variable ac system?
Popularity: 27
Can you ground an electrical system on an old two wire system without putting in new wire?
Popularity: 27
Some places have 120 Volts and others 240 Volts What is the advantage of one over the other?
Popularity: 27
What is 277V?
Popularity: 26
Is reversed polarity when the ground and the neutral are wired backwards?
Popularity: 25
How does a single phase induction motor work?
Popularity: 24
How do we can improve 3 phase 400A bus duct short time current circuit capacity level from 28KA per 1 second to 63KA per 1 second connected direct to low tensione board with 63KA short circuit 415V?
Popularity: 23
Why is the frequency of current 50Hz in India against 60Hz in the USA What should be done to make it 60Hz in India?
Popularity: 23
What is electroplating?
Popularity: 23
Fuses do not protect against what a. short circuits b. overloading c. lightning surges d. large ground faults?
Popularity: 22
What is automation?
Popularity: 22
Can a 380V 3 phase 50Hz electrical motor run safely on a 415V 3 phase 50Hz supply?
Popularity: 22
How can a 240V circuit be wired to a 277V panel?
Popularity: 22
What is the difference between the audio frequency and radio frequency?
Popularity: 21
What is the difference between isolation transformer and step up or step down transformer?
Popularity: 21
How do you rewire a 110 220 volt motor from 110 to 220 with reversible rotation?
Popularity: 21
What is difference between a continuous motor and an intermittent motor?
Popularity: 20
How can you test the oil of transformer?
Popularity: 20
What are high voltage bushings?
Popularity: 20
What is an electrical ladder diagram?
Popularity: 20
What is the difference between current transformer and voltage transformer?
Popularity: 20
What's the physical meaning of i aka the square root of -1 Does it have any physical existence and if not then why is it used to describe some real physical quantities like some terms in electricity?
Popularity: 20
What is electrical earthing?
Popularity: 20
Were can i get a circuit diagram for a 1 phase to 3 phase shifter using capacitors and inductors andor relevent formulas and explanations?
Popularity: 19
How do you determine a resistor's wattage?
Popularity: 19
What is a capacitor?
Popularity: 19
Is there such a thing as 3 phase dc voltages?
Popularity: 19
How does the ground or earth wire of an appliance protect a user if there is a fault with that particular appliance?
Popularity: 18
What is resistance What is an electron Can electrons flow through all materials What materials are good for an electron to go through Is resistance inside of an electron?
Popularity: 18
How do you build a water turbine?
Popularity: 18
When ac generators are operated in parallel frequency and voltage must be equal or frequency and voltage must equal amperage?
Popularity: 18
Define the term dielectric?
Popularity: 18
How do you interface a relay to a microprocessor type 89C51?
Popularity: 18
What is a megger test?
Popularity: 18
What are two black wires attached to a single fuse or breaker lug called A a double loop B a double tap C a two for one D a 2x loop tap?
Popularity: 18
What is a stand by current?
Popularity: 17
Which wires work best in a FM radio?
Popularity: 17
How many Types of spacing of conductors are there in overhead electric power transmission lines?
Popularity: 17
What is the difference between current relay and potential relay?
Popularity: 17
What are those orange balls that are on some power lines?
Popularity: 17
What is the difference between a balanced transformer and an unbalanced transformer?
Popularity: 17
If a socket shorted while you were pulling wallpaper around socket as well as a socket in a different room and there's no sign of tripped breaker could it be a Jct box that feeds that whole area?
Popularity: 17
How do you avoid hand soldering?
Popularity: 17
What is the difference between an Electrical Engineering Technologist and an Electrical Engineering Technician?
Popularity: 17
What is electromagnetic interference and what problems can it cause in the aircraft?
Popularity: 16
What is Solkar Current Differential?
Popularity: 16
What are the periodical checks to be carried out on a Diesel Generating set?
Popularity: 16
Why is the starting current of an 3phase induction motor higher than its rated current?
Popularity: 16
In a four loop DC generator how the loop ends are connected to commutator segments?
Popularity: 16
What is the difference between a step-up and a step-down transformer?
Popularity: 16
What are the precautions to be taken to design electrical scheme for a mining industry?
Popularity: 16
How is it that devices which use 2 leads to make 240V don't need a return wire and where does the electricity go and how?
Popularity: 16
What is a thermal overload?
Popularity: 15
A heater delivers 1500 watts at 110 volts 13.6 amps. If line voltage drops to 90 volts will it generate 1500 watts and draw 16.7 amps or still draw 13.6 amps and produce 1224 watts?
Popularity: 15
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