railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical Machines Alternator and Synchronous Motors
Directions: The question consists of two statements, one labeled as ‘Statement (I)’ and the other labeled as ‘Statement (II)’. You are to examine these two statements carefully and select the answers to these items using the codes given below:
Statement (I): Short circuit ratio is defined as the ratio of the main field current required to generate rated voltage under open circuit condition to the field current required to produce rated armature current under short circuit condition.
Statement (II): The output power of the alternator is inversely proportional to the short circuit ratio.
1
Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I).
2
Both Statement (I) and Statement (II) are individually true, but Statement (II) is not the correct explanation of Statement (I).
3
Statement (I) is true, but Statement (II) is false.
4
Statement (I) is false, but Statement (II) is true.