Electrical Engineering Questions And Answers :: Magnetic Circuit: part1

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Electrical Engineering : Magnetic Circuit QUESTIONS AND ANSWERS :: part1 : 6 to 10

Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

6.The rate of rise of current through an inductive coil is maximum

at 63.2% of its maximum steady value
at the start of the current flow
after one time constant
near the final maximum value of current

7.If the area of hysteresis loop of a material is large, the hysteresis loss in this material will be

zero
small
large
none of the above

8.The unit of retentivity is

weber
weber/sq. m
ampere turn/metre
ampere turn

9.Silicon steel is used in electrical machines because it has

low co-ercivity
low retentivity
low hysteresis loss
high co-ercivity

10.Point out the wrong statement. Magnetic leakage is undesirable in electric machines because it

lowers their power efficiency
increases their cost of manufacture
leads to their increased weight
produces fringing

More Magnetic Circuit QUESTIONS AND ANSWERS available in next pages

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