Electrical Machines
A belt-driven cumulatively-compound dc generator is delivering power to the dc mains. If the Belt snaps then the machine will run as a

 cumulative compounded motor in the same direction
 differentially compounded motor in the same direction
 differentially compounded motor in the opposite direction
 cumulative compounded motor in opposite direction

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Electrical Machines
In a transformer

 OC test is conducted on LV side and SC test is conducted on HV side
 both Oc and SC tests are conducted on HV side
 OC test is conducted on HV side and SC test is conducted on LV side
 both OC and SC tests are conducted on LV side

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