SSC JE Electrical Engineering 29th Jan 2018 Shift-2

Instructions

For the following questions answer them individually

SSC JE Electrical Engineering 29th Jan 2018 Shift-2 - Question 121


What will happen to the magnetic flux density produced in a material, if the magnetizing force is increased?

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SSC JE Electrical Engineering 29th Jan 2018 Shift-2 - Question 122


A magnetic circuit mainly consists of a material having _____ permeability.

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SSC JE Electrical Engineering 29th Jan 2018 Shift-2 - Question 123


On which of the given factors does the reluctance of the magnetic circuit depend?

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SSC JE Electrical Engineering 29th Jan 2018 Shift-2 - Question 124


What type of EMF is induced in AC or DC generator?

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SSC JE Electrical Engineering 29th Jan 2018 Shift-2 - Question 125


What will happen to the permeance of the magnetic circuit, if the area of the cross section of the circuit gets doubled?

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SSC JE Electrical Engineering 29th Jan 2018 Shift-2 - Question 126


Two coils of self inductance 3 H and 5 H are connected in a series-opposing each other. What is the equivalent inductance(in H) of the circuit, if the coefficient of coupling between the coils is 0.6 ?

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SSC JE Electrical Engineering 29th Jan 2018 Shift-2 - Question 127


The magnetic flux linking a coil having 200 turns is 40 mWb. Calculate the average emf(in V) induced in the coil, if this magnetic flux is reversed in a time of 5 milliseconds.

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SSC JE Electrical Engineering 29th Jan 2018 Shift-2 - Question 128


Out of the four materials A, B, C, D, which will have the lowest retentivity?

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SSC JE Electrical Engineering 29th Jan 2018 Shift-2 - Question 129


A solenoid has a diameter of 6 cm and a length of 60 cm and it comprises of 7000 turns. Calculate the energy stored (in J) in the solenoid, if 10 A current flows through it.

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SSC JE Electrical Engineering 29th Jan 2018 Shift-2 - Question 130


The current in the circuit shown below is 4 A. Calculate the magnetic field intensity (in A turns/m) in the core,if the winding has 50 turns.

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