Find the pull that must be exerted by the spring, Electrical Engineering

Assignment Help:

Q. Figure can also be considered as a simple model of a magnetically operated relay that is commonly used for the automatic control and protection of electric equipment. Consider the core and armature (shown as "Bar" in Figure of the relay to be constructed out of infinitely permeable magnetic material. The core has a circular cross section and is 1.25 cm in diameter, while the armature has a rectangular cross section. The armature is so supported that the two air gaps are always equal and of uniform length over their areas. A spring (not shown in the figure), whose force opposes the magnetic pull, restrains the motion of the armature. If the operating coil has 1800 turns carrying a current of 1 A, and the gaps are set at 0.125 cmeach, find the pull that must be exerted by the spring. You may neglect leakage and fringing.

2493_Obtain an expression for the induced emf.png


Related Discussions:- Find the pull that must be exerted by the spring

Detrmine when the current flowing in the conductor, A conductor 300 mm long...

A conductor 300 mm long moves at a uniform speed of 4 m/s at right-angles to a uniform magnetic field of flux density 1.25 T. Verify the current flowing in the conductor when  (

In the circuit, see figure on this link: http://tinypic.com/r/1zodevk/8. ...

see figure on this link: http://tinypic.com/r/1zodevk/8. A. j400 I1-j1200 I2 (A) B. -j400 I1+j1600 I2 (A) C. j400 I1+j400 I2 (A) D. -j400 I1-j400 I2 (A)

Installation of meters and verification of connections, Installation of Met...

Installation of Meters and Verification of Connections Apart from testing and calibrating the meters they must be properly installed as per the links diagram. The points in wh

Signals and spectral analysis, Q. Signals and spectral analysis? Figure...

Q. Signals and spectral analysis? Figure shows the functional block diagram of a signal-processing system. The information source may be a speech (voice), an image (picture), o

Instrumentation, explain measurement of frqueny and phase using cro

explain measurement of frqueny and phase using cro

Can you explain honorarium?, Can you explain Honorarium? Ans: Honora...

Can you explain Honorarium? Ans: Honorarium is a remuneration for work performed which is intermittent or occasional in character and either so laborious or of such special

Requirement of a hybrid in telephone networks, Q. What is the requirement o...

Q. What is the requirement of a hybrid in telephone networks? How does it work? Ans: Digital exchanges require receive and transmit signals on separate two-wire circuits. Th

Electrical drives and actuators, 'Electric drives' is a term used to descri...

'Electric drives' is a term used to describe DC and AC electric motors that provide continuous rotarmotion. They are often controlled by 'electronic drivesystems' designed to contr

Physical operation of the junction of diode, Q. Physical operation of the j...

Q. Physical operation of the junction of diode? The physical operation of the junction can be described in terms of the charge-flow processes. Usually there is a greater concen

Write Your Message!

Captcha
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