India's Mangal Electrical drops on Q1 profit fall
** Shares of recently listed Mangal Electrical Industries MNGE.NS falls 7% to a record low of 500 rupees ** Transformer maker's Q1 profit drops 31.5% Y/Y, hurt by price volatility and softer demand; rev down 21.6% ** Stock down 10% since its debut in August-end (Reporting by Aleef Jahan in Bengaluru) ((aleefjahan.cs@thomsonreuters.com))