question_subject:
Science
question_exam:
CAPF
stats:
0,37,42,8,23,37,11
keywords:
{'transformer': [0, 1, 0, 2], 'low voltage': [0, 0, 0, 3], 'high voltage': [0, 0, 0, 4], 'voltage': [0, 0, 0, 1], 'direct current': [0, 0, 0, 1], 'fluctuation': [1, 1, 0, 1]}