Related Questions

In transformers using hot rolled steel, the cross-section of the yoke is made about _____ greater than that of the core
A 5 percent
B 10 percent
C 15 percent
D 30 percent
E none of the above
By walking at 3/4 of his usual speed, a man reaches his office 20 minutes later than usual. His usual time is :
A 30 minutes
B 75 minutes
C 45 minutes
D 60 minutes
The permissible flux density in case of cold rolled grain oriented steel is around
A 1.7 Wb/m2
B 2.7 Wb/m2
C 3.7 Wb/m2
D 4.7 Wb/m2
Silicon percentage in silicon steel used for electrical equipments is about
A 1
B 4.0
C 8
D 14
Silicon percentage in the silicon steel used for electrical appliances/equipments is
A 0.3-0.4
B 12-14
C 3-4
D 20-25
The probability of rolling any number of an wighted 6-sided die, with faces numbered 1 through 6, is directly proportional to the number rolled. What is the probability of getting 5, if the die is rolled only once?
A 1/6
B 5/6
C 5/16
D 5/21
The probability of rolling any number on a weight 6-sided die, with faces number 1 through 6, is directly proportional to the number rolled. What is the probability of getting 5, if the die is rolled only once?
A 1/6
B 5/6
C 5/16
D 5/21
A die is rolled and a coin is tossed What is the probability that a 3 will be rolled and a tail tossed?
A 1/2
B 1/6
C 1/8
D 1/12
Two transformers are connected in parallel. These transformers do not have equal percentage impedance. This is likely to result in
A short-circuiting of the secondaries
B power factor of one of the transformers is leading while that of the other lagging
C transformers having higher copper losses will have negligible core losses
D loading of the transformers not in proportion to their kVA ratings
The forced oil and air circulation method is usual one for transformers of capacities
A upto 5 MVA
B upto 10 MVA
C upto 20 MVA
D 30 MVA upwards

Next steps