BSE Sensex, Nifty fall on earnings, elections

MUMBAI (Reuters) - The BSE Sensex fell on Friday, marking its biggest weekly loss in eight, as blue-chips such as Tata Motors slumped on weak earnings and on worries the Modi-led Bharatiya Janata Party may face defeat in the upcoming Delhi state elections. The broader Nifty fell 0.58 percent for the day, dropping 1.67 percent for the week, while the benchmark BSE Sensex lost 0.46 percent to mark a weekly fall of 1.6 percent. The indexes extended their losing streak for a sixth consecutive sessio