Question :
A) the heating effect of current alone
B) hysteresis loss alone
C) both the heating effect of current and hysteresis loss
D) intense sunlight at noon
Answer : C
Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to
A) the heating effect of current alone
B) hysteresis loss alone
C) both the heating effect of current and hysteresis loss
D) intense sunlight at noon
Answer : C
Description :
Related Questions - 1
Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to
A) the heating effect of current alone
B) hysteresis loss alone
C) both the heating effect of current and hysteresis loss
D) intense sunlight at noon
Related Questions - 2
Siphon will fail to work if
A) the densities of the liquid in the two vessels are equal
B) the level of the liquid in the two vessels are at the same height
C) both its limbs are of unequal length
D) the temperature of the liquids in the two vessels are the same
Related Questions - 3
Related Questions - 4
The absorption of ink by blotting paper involves
A) viscosity of ink
B) capillary action phenomenon
C) diffusion of ink through the blotting
D) siphon action
Related Questions - 5
Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension?
A) Pressure and Young modules
B) Planck constant and Angular momentum
C) Impulse and moment of force
D) Force and rate of change of linear momentum