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

Low voltage at transformers, Low Voltage at Transformers While the vo...

Low Voltage at Transformers While the voltage applied to induction motor varies from the rated voltage, its performance is affected. Against permissible voltage variation of

Calculation of receiving end voltage, Calculation of Receiving End Voltage ...

Calculation of Receiving End Voltage Consider the simple circuit shown in Figure. To find the voltage V 2 using analytical method:   P = I V 2 = 0.5      ..... (1)

What do you mean by time consistent busy hour, Q. What do you mean by Time ...

Q. What do you mean by Time consistent Busy Hour? (i) Busy Hour (ii) Peak Busy Hour (iv) Time consistent Busy Hour  (v) Traffic intensity Ans: (i)  Busy Hour: C

What do you mean by counters, Q. What do you mean by Counters? The shif...

Q. What do you mean by Counters? The shift register can be used as a counter because the data are shifted for each clock pulse. A counter is a register that goes through a pred

Find the parameter values for channel mosfet, Q. Find the parameter values ...

Q. Find the parameter values V T and I DSS for a p- channel MOSFET with i D = 0 when v GS ≤-3 V, and i D = 5 mA when v GS = v DS =-8V.You may neglect the effect of v DS on

Forward and reverse battery bias, Forward and Reverse battery bias In ...

Forward and Reverse battery bias In diagram below(a) the battery is arranged that is why the negative terminal supplies electrons to the N-type material. These types of electr

Electrical and electronic principles, 12. A capacitor is to be constructed ...

12. A capacitor is to be constructed so that its capacitance is 0.2µF and to take a p.d. of 1.25kV across its terminals. The dielectric is to be mica which, after allowing a safety

ELECTRONICS, WHAT IS MIDPOINT BIASING OF A TRANSISTOR?

WHAT IS MIDPOINT BIASING OF A TRANSISTOR?

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