Determine the coil current and the energy stored in steel

Assignment Help Electrical Engineering
Reference no: EM13286462

The entire device is made of sheet steel. The coil has 2,000 turns. The armature is stationary so that the length of the air gaps, g=10mm, is fixed. A direct current passing through the coil produces flux density of 1.2 T in the gaps. assumeπr=4,000 for sheet steel. Determine
a. The coil current.
b. The energy stored in the air gaps.
c. the energy stored in the steel.

Reference no: EM13286462

Questions Cloud

What is voltage required to get classical music station : The p-n junction in part (a) is used as a capacitor in an LC circuit to tune two WHRO stations in your car radio. When no voltage is applied a radio station transmitting at 89.5 MHz is received. What is the voltage required to get the classical mu..
Explain the entire system to warm to room : If we inject 120.0 mL of liquid helium and allow the entire system to warm to room temperature (25°C), what is the pressure inside the bottle
What single investment made today : Answer each of the following questions. a. What single investment made today, earning 12% annual interest, will be worth $ 6,000 at the end of 6 years?
What is the total duration of the rockets flight : A model rocket blasts off and moves upward with an acceleration of 15m/s^2 until it reaches a height of 35m, what is the total duration of the rocket's flight
Determine the coil current and the energy stored in steel : The armature is stationary so that the length of the air gaps, g=10mm, is fixed. A direct current passing through the coil produces flux density of 1.2 T in the gaps. assumeπr=4,000 for sheet steel. Determine a. The coil current.
What is the repayment at the end of year 4 : A person borrows $200 to be repaid in 8 years with 14% annually compounded interest. The loan may be repaid at the end of any earlier year with no prepayment penalty.
Evaluate the activation energy ea for the reaction : A first order chemical reaction has a rate constant of 5.8×104 s-1 at 10 °C and a rate constant of 4.7×105 s-1 at 64 °C. Calculate the activation energy, Ea, for the reaction.
Estimate of the intrinsic value : If a stock's market price exceeds its intrinsic value as seen by the marginal investor, the the investor will sell the stock until its price has fallen down to the level of the investor's estimate of the intrinsic value.
Determine the electric flux through the wall : A vertical wall (7.2 m 2.8 m) in a house faces due east. A uniform electric field has a magnitude of 150 N/C. What is the electric flux through the wall

Reviews

Write a Review

 

Electrical Engineering Questions & Answers

  What is terminal voltage of self-excited dc shunt generator

A self-excited DC shunt generator is delivering 20 A to a 100-V line when it is driven at 200 rad/s. It is known that Ra=1.0 ohms and Rf=100 ohms. When the generator is disconnected from the line, the drive motor speeds up to 220 rad/s

  Which one will store most charge

For a circuit with resistor of 10 K ohm and a capacitor of 5 micro Farads, what is the time constant in second?

  What gauge of wire would use if needed to limit power loss

You plan to integrate a sensor that operates at 24 VDC and 2A At distance of 100 feet from your controller under normal conditions. What gauge (AWG) of wire would you use if you needed to limit your power loss to 10%

  What is smallest frequency that can be used by signals

What is the smallest frequency that can be used to sample each of the following continuous-time signals such that the signal can be recovered from the discrete samples (a) \(x(t)=1+cos(2000\pi t)+cos(4000\pi t)\)

  Find what is its cut-off frequency of a low pass filter

For a first order low pass filter, with a cut-off of 2 kHz, how many decades and octaves would the frequency be if the attenuation was -58 dB. What would the frequency be at that attenuation.

  Determine the induced emf in the rotating loop

A rectangular loop of wire containing a high resistance voltmeter has corners initially at (a/2, b/2, 0), (-a/2, b/2, 0), (-a/2, -b/2, 0) and (a/2,-b/2, 0). The loop begins to rotate about the x axis at constant angular velocity w.

  What are the impedance and the component value of the load

A balanced, three-phase, Y-connected source has a line voltage of 440 Vrms. The source frequency is 60 Hz. The balanced, three-phase loads have the following characteristics: Zy1: P1 = 15 kW and Q1 = +18 kVAR Z?2: |S2|=21 kVA and PF2 = 0.500 laggin..

  By how much should change the inductance for power factor

When an RLC series circuit is connected to a 120 V rms, 60 Hz line, the rms current in the circuit is 11 A and this current leads the line voltage by 45 degrees. (a) Find the average power supplied to the circuit. (b) What is the resistance in the..

  How fast have an angular momentum spin

How fast, in rpm, would a 100 g, 50-cm diameter beach ball have to spin to have an angular momentum of 0.10 kg m^2/s

  How to combine the expressions into a single sinusoid

How to Combine the following expressions into a single sinusoid and plot both the combined and original expressions in Matlab across 2 periods. a) 2cos(3t)-cos(3t-pi/4) b) sin(2t- pi/4) + 2cos(2t-pi/3) c) cos(t) - sin(t) d) 10cos((pi*t) + pi/3) + ..

  Resultant waveform of the odd harmonic series

Prepare an Excel graph showing the individual components and summated resultant waveform of the odd harmonic series resulting in an approximate square wave.

  At what frequncy does the frequncy response drop

The woofer can be modeled as a series R-L low pass filter. Suppose that a given woofer has an inductance of 750 micron Hertz and a resistance of 4 Ohms. At what frequncy (in Hertz) does its frequncy response

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd