Room air conditioners and packaged units are examples of _________
(a) Direct expansion systems
(b) Indirect expansion systems
(c) Chilled water systems
(d) Indirect contraction systems
I had been asked this question during an internship interview.
My query is from Systems and Essentials of Air Conditioning System in section Air Conditioning, Thermal Insulation, Stones & Ferrous Metals of Construction & Building Materials