Mechanical Engineering MCQ

1. What is convection? a) The transfer of heat through direct contact between materialsb) The transfer of heat through electromagnetic wavesc) The transfer of heat … Read more

1. What is the primary purpose of extended surfaces (fins) in heat transfer? a) To reduce the surface area for faster heat dissipationb) To increase … Read more

1. Which law governs the transfer of heat by the movement of hot molecules to cooler ones? a) Fourier’s Lawb) Newton’s Lawc) Stefan-Boltzmann Lawd) Carnot’s … Read more

1. Which type of analysis is concerned with studying the behavior of a structure under varying loads over time? a) Static analysisb) Dynamic analysisc) Thermal … Read more

1. Which method involves solving problems using mathematical equations and formulas?a) Analytical methodb) Numerical methodc) Experimental methodd) None of the above Answer: a) Analytical methodExplanation: … Read more

1. Which of the following is not a characteristic of a fluid coupling?a) Variable torque ratiob) Variable speed ratioc) Slip-free operationd) High efficiency Answer: b) … Read more

1. Which type of machine is primarily classified based on pressure rise and flow mechanism? a) Centrifugal Blowersb) Axial Flow Compressorsc) Positive Displacement Compressorsd) Reciprocating … Read more

1. Which of the following turbines is best suited for high head, low flow applications?a) Pelton turbineb) Francis turbinec) Kaplan turbined) None of the above … Read more

1. What is the purpose of impulse staging in steam turbines?a) To increase pressure compoundingb) To decrease velocity compoundingc) To utilize steam velocity for energy … Read more

1. Which law of thermodynamics governs the energy conversion process in turbo machines?a) First lawb) Second lawc) Third lawd) Zeroth law Answer: a) First lawExplanation: … Read more