context: On his 50th birthday in 1906, Tesla demonstrated his 200 horsepower (150 kilowatts) 16,000 rpm bladeless turbine. During 1910–1911 at the Waterside Power Station in New York, several of his bladeless turbine engines were tested at 100–5,000 hp.
question: టర్బైన్ ఏ వేగంతో పనిచేస్తుంది?
answers: 16,000 rpm 16,000 rpm 16,000 rpm