Electrical daily capsule 11,12

at March 24, 2018 on Saturday, 24 March 2018

Capsule 12
Let's test your self


Q1-In hysteresis loop


Q2-Which of the following instrument has the highest torque/weight ratio


Q3- The biot-savert's law is general modification of


Q4-The commutator of a DC generator is acts as


Q5-The transformer of a welding machine is a


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SUBJECTIVE

                CHARGE:
                             It is the physical property of a matter by the virtue of which it experience a force when it placed in a magnetic field. Same pole repel each other and different pole attract each other.

Capsule 11
Let's test your self


Q1-Which of the following motor can be run on DC as well as AC


Q2-A 150v dc motor armature resistance 0.4ohm has back E.M.F of 142v. The armature current is

Q3-The current in reverse biased in P-N junction diode may be


Q4-The B-H curve is used find the mmf of this section of the magnetic circuit. this section is known as

Q5-The highest transmission AC voltage in india



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Subjective

   Biot-savart's law

                          It is a statement in electromagnetism: the magnetic intensity at any point due to a steady current in an infinitely long straight wire is directly proportional to the current and inversely proportional to the distance from point to wire.

                               If  a compass brought near to an electric wire, the compass needle changes direction. TheBiot-Savart Law is an equation that describes the magnetic field created by a current-carrying wire, and allows you to calculate its strength at various points.










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