Multiple choice question for engineering Set 1 1.Which of these is not a major direct energy conversion device? a) magnetohydrodynamic b) thermionic c) geothermal d) fuel cell AnswerAnswer: c [Reason:] Geothermal energy is not available everywhere. 2.Which of these is the most promising power generation system? a) magnetohydrodynamic b) thermoelectric c) hydrogen d) fuel cell…