QUESTION1 1 poin Permeability is -\' O the opposition to being magnetized the sh

Question

QUESTION1 1 poin Permeability is -' O the opposition to being magnetized the shielding effect of a material the ability of a magnetic material to conduct a current O the ease of a material to be magnetized QUESTION 2 1 p Like magnetic poles . O repel each other O have no effect on each other O have the same current through them O attract each other QUESTION 3 If some turns of wire are removed from an electromagnet, the magnetic field will O be more than the original electromagnet O be the same as the original electromagnet O be less than the original electromagnet QUESTION 4 If more turns of wire are added to a coil and then that coil is moved through a magnetic field, the voltage produced will O be more than the original coil O be less than the original coil O be the same as the original coil QUESTION 5 The term reluctance in magnetic circuits is like the term O current O capacitance O voltage O resistance in electrical circuits. UESTION 6 Two north magnetic poles attract one another O True O False

Explanation / Answer

Question 1

Ans:permeability is the ease of material to get magnetised.

Permeability is the property of core material and material having high permeability offers low reluctance to magnetic flux and allow easy path to flux.

Question 2

Ans : like magnetic poles repel each other

Always like poles repel and unlike poles attract

Question 3

Ans : be less than the original magnetic field

Magnetic flux=Ni/R, where N is no of turns and I is current and R is reluctance.

So magnetic flux proportional to no of turns.

Question 4

Ans :be more than the original coil

Since voltage induced =Nd(pi)/dt,where N is no of turns and pi is magnetic flux.

Voltage is directly proportional to N.

Question 5

Ans : Resistance

Since voltage refers magneto motive force(Ni),current refers flux,Reluctance refers Resistance,conductance refers permeance,conductivity refers permeability.

Question 6

Ans :False

Two north poles repel and also two south poles repel.because like poles always repel and unlike poles attract.

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