Which of the following is wrong about the machine rating?
A.
. CMR machines can accept a considerable momentary overload and perhaps even a moderate over-load for a longer duration.
B.
Temperature has effect on the performance of all electrical equipment but not on the useful life of the insulation.
C.
The ambient air temperature and the heating effect of current in the windings result in the total temperature of an operating machine.
D.
Adequate ventilation of electrical equipment is therefore essential.