A 300 mm x 150 mm venturi meter is provided in a vertical pipeline carrying oil of specific gravity 0.9, flowing upward. The difference in elevation of the throat section and entrance section of the venturi meter is 300 mm. The differential U – tube manometer shows a gauge deflection of 250 mm. Calculate i) The discharge of oil ii) The pressure difference between entrance and throat section. Take: coefficient of discharge of venturi meter is 0.98.