5181. The radial distance of a tooth from the pitch circle to the bottom of the tooth is called
[A]. dedendum
[B]. addendum
[C]. clearance
[D]. working depth
✅ The correct answer is option A.
Mechanical Engineering
Prepare with the best Mechanical Engineering MCQs with answers and explanations for exams, interviews, and job tests. Our collection covers core topics such as engineering mechanics, thermodynamics, strength of materials, theory of machines, fluid mechanics, heat transfer, manufacturing processes, machine design, and power plant engineering. These Mechanical Engineering multiple-choice questions are designed for students, fresh graduates, and professionals preparing for NTS, PPSC, FPSC, PEC exams, GATE, university entry tests, and recruitment assessments. Strengthen your technical knowledge and problem-solving ability with our updated and comprehensive Mechanical Engineering MCQs.
5182. The turbine blades are
[A]. straight
[B]. circular
[C]. curved
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✅ The correct answer is option C.
5183. The tool made of cemented carbide wear out faster at
[A]. slow speeds
[B]. medium speeds
[C]. fast speeds
[D]. very fast speeds
✅ The correct answer is option A.
5184. The purpose of a riser is to
[A]. deliver molten metal into the mould cavity
[B]. act as a reservoir for the molten metal
[C]. feed the molten metal to the casting in order to compensate for the shrinkage
[D]. deliver the molten metal from pouring basin to gate
✅ The correct answer is option C.
5185. Which of the following boiler is best suited to meet the fluctuating demand of steam ?
[A]. Locomotive boiler
[B]. Lancashire boiler
[C]. Cornish boiler
[D]. Babcock and Wilcox boiler
✅ The correct answer is option A.
5186. If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is
[A]. 30°
[B]. 60°
[C]. 90°
[D]. 120°
✅ The correct answer is option D.
5187. Which of the following statement is wrong?
[A]. In a two stage reciprocating air compressor with complete intercooling, maximum work is saved.
[B]. The minimum work required for a two stage reciprocating air compressor is double the work required for each stage.
[C]. The ratio of the volume of free air delivery per stroke to the swept volume of the piston is called volumetric efficiency.
[D]. none of the above
✅ The correct answer is option D.
5188. If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in
[A]. neutral equilibrium
[B]. stable equilibrium
[C]. unstable equilibrium
[D]. none of these
✅ The correct answer is option B.
5189. In order to prevent tool from rubbing the work __________ on tools are provided.
[A]. rake angles
[B]. relief angles
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✅ The correct answer is option B.
5190. In a ventilated disc brake,
[A]. a duct directs air towards the caliper for cooling while the vehicle is moving
[B]. caliper is covered with cooling fins
[C]. disc contains many small holes for optimum cooling performance
[D]. disc contains radial vanes between its rubbing surfaces for optimum cooling performance
✅ The correct answer is option D.