A combined separating and throttling calorimeter has been used to measure the dryness of very wet steam. A particular test gave the following results: Main pressure: 3.4 x 10 N/m? gauge. Mass of water drained from the separator: 0:33 kg. Mass of steam condensed after passing through the throttle: 4-66 kg. Throttling calorimeter readings: pressure, 51 mm water gauge temperature, 145 C. Barometer reading: 746 mm mercury. Evaluate the dryness of the steam in the main and state, with reasons, whether the throttling calorimeter alone could have been used for this test.