241 Questions for the topic electrical engineering

Electrical Engineering Help (I am stuck on what to do)

A 15 Watt desk-type fluorescent lamp has an effective resistance of 200 ohms when operating (note: the 15 Watts is only associated with the lamp). It is in series with a ballast that has a... more

Algebra: Proportions

The energy 𝑊 used by a device is directly related to the current 𝐼, the voltage 𝑉, and the length of time 𝑡, for which the energy is used. If a 240-V clothes drier draws a current of 15 A and in 45... more

Per the 2017 NEC, what is the largest size insulated solid conductor permitted to be installed into an existing raceway?

It is in the 2017 National Electrical Code book and I need the article and section please

Electrical Algebra Problem

The impedance, 𝑍, in a certain circuit is the square root of the sum of the square of the resistance of 𝑅 and the square of the reactance 𝑋 in ohms. Find the reactance of the circuit if 𝑍 = 10 Ω... more

Electrical Algebra Problem

The voltage, 𝑉, in volts, in a circuit is the square root of the product of the power, 𝑃 in watts and the resitance, 𝑅, in ohms. If the voltage is 240 V and the power is 2500 W, what is the... more

How speed torque curve is defined in different riding modes of electric vehicle.

In Electric vehicle we see they have different riding modes which are like Eco mode, Highway mode, Sport Mode. These modes have different torque speed relationship. so how we decide this speed... more

Circuits II Laplace and differential equation question

Find thedifferential equationrelating()Find thefind a differential equation relating c(t) and r(t) if:C(s)/R(s) = (s + 1)/(s(s+2)(s+3))ctand()rtif

Solve for the equivalent resistance seen by the source

A voltage source is connected to a series resistance =1 ohm and a parallel combination of two resistance each = 2 ohms.

A parallel RL circuit has an AC source of 80 volts at a frequency of 600 Hz. The current through the resistor is 3.4 mA and the current through the inductor is 2.6 mA. What's the circuit current?

A parallel RL circuit has an AC source of 80 volts at a frequency of 600 Hz. The current through the resistor is 3.4 mA and the current through the inductor is 2.6 mA. What's the circuit current? 

A pressure transmitter has a range of -1 to 3 Bar and an output of 4 to 20 mA. Calculate the required pressure input and expected mA output to calibrate the device at 10%, 20% and 85% of it's range.

Also, if the same pressure transmitter was vented to the atmosphere, having the general atmospheric pressure with no other pressure applied, what would the mA output be?

Why is cable shielding important?

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