Mechanical Engineering - MCQ Practice Questions
Core mechanical MCQs — thermodynamics, SOM, fluid mechanics for GATE & PSUs.
259 questions | 100% Free
In gear design, what does the term 'Module' represent?
Which bearing type is most suitable for high-speed applications with moderate loads?
Which type of fit is used when a permanent assembly is required with no relative motion?
Which material property is MOST critical for designing a component subjected to cyclic loading?
In a welded joint, which type of stress is primarily responsible for failure in a butt weld under tensile loading?
In journal bearing design, if the bearing length is doubled while keeping other parameters constant, how does the load capacity change?
Which of the following is the primary function of a Woodruff key in shaft design?
In clutch design, what is the primary advantage of a multi-plate clutch over a single-plate clutch?
Which of the following is the primary function of a flexible coupling in machine design?
In belt drive design, if the velocity ratio is 3:1 and the smaller pulley has a diameter of 100 mm, what should be the diameter of the larger pulley?
In spur gear design, the module is 4 mm and the number of teeth on the pinion and gear are 20 and 60 respectively. What is the center distance between the gears?
Which of the following materials is BEST suited for manufacturing hydraulic cylinder pistons?
In a worm gear drive with a single-start worm, module 2 mm, and 40 teeth on the gear, what is the worm pitch?
A hollow shaft has an outer diameter of 60 mm and inner diameter of 40 mm. What is the polar moment of inertia of the shaft?
Which type of bearing is preferred for applications requiring self-alignment capability?
In a spur gear design, what is the primary function of backlash?
Which of the following materials is preferred for manufacturing flexible couplings?
A journal bearing is subjected to a radial load of 10 kN with shaft speed of 600 rpm. If bearing length is 80 mm and shaft diameter is 50 mm, find the bearing pressure (Hertzian pressure approximation).
What is the primary advantage of using roller bearings over ball bearings in heavy industrial applications?
Which of the following is NOT a function of a coupling in power transmission systems?