410 Answered Questions for the topic electrical engineering

Electrical Engineering

05/24/19

What should you look for when buying a [cheap, generic] multimeter?
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Electrical Engineering Music Production

05/22/19

Home-made speaker cracks when bass is played loudly
I made this "boombox" type speaker about a year ago and it always crackles at loud volumes during bassy parts of the song. The boombox consists of 2 JBL CLUB6520 6.5" 300W Club Series 2-Way Coaxial... more
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Electrical Engineering Maths

05/21/19

How to find the inductance
Hi, I cannot seem to find the exact equation to answer a question regarding a R-C? series circuit (resistor and coil?)R = 5Ω I = 20AVs = 200v, 50HzI need to calculate Z, the value of the inductor... more
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Electrical Engineering

05/11/19

How does an AC generator synchronize to the grid?
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Electrical Engineering

05/05/19

A transformer is used to step down 250 V main supply to 8 V. If there are 2000 turns in the primary coil, how many turns must the secondary coil have?
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Electrical Engineering Science Physics

04/29/19

How do you calculate the current

if the battery is a 9-volt battery and the resistance in the circuit is 50 ohm's how much current is flowing through the circuit
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Electrical Engineering

04/23/19

Three 60w bulbs are in parallel across a 60 v power line. If one bulb burns open what will happen to the other 2?
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04/12/19

How to inspire?
Why do most students get caught up in the rat race of learning solely for a grade on a transcript? How to inspire curiosity and creativity for lifelong learning?
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Electrical Engineering Mechanical Engineering

03/28/19

What is the best type of energy storage system to use in transportation applications.
The question really revolves around what the “best” ( ie most efficient, compact, low cost) energy storage system would be to use within the UK transport infrastructure in the coming years (near... more
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Electrical Engineering Generator Volt Amperage Modulation

03/28/19

Electrical output for a generator powered forge
I have a 7000 watt generator, and I am trying to use it to power a forge/foundry made of molybdenum wire and a casing that has a temperature resistance of 3000 degrees Fahrenheit. I was told I... more
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Electrical Engineering Cuircuits

03/14/19

If the open circuit is closed by connecting a portable television to the gap in the wire, what happen
If the open circuit is closed by connecting a portable television to the gap in the wire, what happens
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03/10/19

Design Problem for Amplitude Modulation
We want to design a point to point communication system for voice data transmission. The designer hasspecified use of AM scheme with conservative bandwidth. The carrier frequency of operation is... more
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Electrical Engineering Mechanical Engineering Technology

02/06/19

"Infinite" power generation
My main question is why is it considered impossible to create machines or technology that can create infinite power. I am a major enthusiast of technology, mechanical and electrical engineering,... more
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Electrical Engineering Physics

01/27/19

Why is field effect transistor is called a voltage controlled device
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Electrical Engineering Microwave Plastics

12/12/18

Can microwaving plastic by accident damage my microwave
Basically I put my food in a plastic container and forgot that some plastics melt. Then steam started coming from the container out of the microwave. Wasn’t on for long but scared I’ll never be... more
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Electrical Engineering Electromagnetism

11/20/18

What is an alternator
What is the difference between an alternator and a generator?PO
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Electrical Engineering Physics

10/25/18

Contradiction in Power Equations
Why is the power and resistance directly proportional to each other in P=I2R, but inversely proportional in P=V2/R?
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Electrical Engineering

09/21/18

How much power will this use when connected to a 120 V outlet?
A toaster has a heating element that is 300 inches long, has a resistivity of 1.10 x 10-6 ohm m atoperating temperature, and is 19 gauge (d = 0.914 mm) wire. How much power will this usewhen... more
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Electrical Engineering

07/24/18

electrical engineering
an alternating circuit the applied voltage is V= 100-j50 and current in the circuit is given by i=3-j4 determine real and reactive power
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Electrical Engineering

07/24/18

resultant cuurent
two  curents represented by i1=100sin wt  and i2=100(sin wt+45) are feed in same conductor calculate result curent
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07/11/18

2-to-1 Multiplexer and a NOT gate to create XOR
How do I implement the 2-input XOR logic function using only a 2-to-1 multiplexer and a NOT gate?  Thanks. 
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Electrical Engineering Physics Mechanical Engineering Engineering

03/24/18

you are given a motor operated by a 9V battery....
For all the questions below, you are given a motor operated by a 9V battery. The stall torque for this motor is Ts = 0.04 N-m, and its no-load speed, wnl = 2200 rpm. 1. Draw the torque vs. speed... more
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Electrical Engineering Electronics

11/20/17

Electronics
Determine the resonance frequency of the tank circuit shown in the figure. The individual component values areL = 5 mH; C = 5 nF
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Electrical Engineering

10/21/17

Which one of the following will NOT increase the time constant in an RC circuit?
Options:Adding another resistor in series. Switching out the capacitor for one with a larger capacitance Switching out the resistor for one with a larger resistance Increasing the voltage of the... more
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Electrical Engineering

10/20/17

Engineering Problem.
A 10V power supply is connected in series with a capacitor with C=0.01F and a resistor with R=20Ω. Once the capacitor is fully charged, the current in the circuit will be Options: 0.5A 0 A 50 A 1 A
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