Mechanical Engineering MCQ

1. What is the primary function of a fluid coupling in a mechanical system? a) To provide a direct mechanical connection between two shaftsb) To … Read more

1. Which type of machine is primarily classified based on pressure rise and flow direction? a) Centrifugal blowerb) Centrifugal compressorc) Axial flow compressord) Reciprocating compressor … Read more

1. What type of turbine is most suitable for high head, low flow rate conditions? a) Pelton turbineb) Francis turbinec) Kaplan turbined) Centrifugal pump Answer: … Read more

1. What is impulse staging in steam turbines? a) It refers to the arrangement of multiple impulse stages in seriesb) It involves the use of … Read more

1. Which law of thermodynamics primarily governs the energy conversion process in turbo machines? a) First Lawb) Second Lawc) Third Lawd) Zeroth Law Answer: b) … Read more

1. What type of lubrication primarily relies on the viscosity of the lubricant to separate moving surfaces? a) Boundary lubricationb) Hydrodynamic lubricationc) Mixed lubricationd) Elastohydrodynamic … Read more

1. Which theory focuses on the assumption that the pressure distribution between two sliding surfaces is uniform? a) Friction surface theoryb) Uniform pressure theoryc) Wear … Read more

1. What is the primary function of a helical compression spring?a) To store and release mechanical energyb) To provide tension in a mechanical systemc) To … Read more

1. Which factor is considered in the design of a shaft subjected to combined bending, twisting, and axial loading? a) Yield strengthb) Modulus of elasticityc) … Read more

1. What are the causes of stress concentration in a mechanical component? a) Uniform loadingb) Smooth surfacesc) Geometric irregularities and defectsd) Large cross-sectional area Answer: … Read more