5261. The shell diameter of a Locomotive boiler is
[A]. 1 m
[B]. 1.5 m
[C]. 2 m
[D]. 2.5 m
✅ The correct answer is option B.
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.
5262. Haematite iron ore contains iron about
[A]. 30%
[B]. 45%
[C]. 55%
[D]. 70%
✅ The correct answer is option D.
5263. In railway axle boxes, the bearing used is
[A]. deep groove ball bearing
[B]. double row self-aligning ball bearing
[C]. double row spherical roller bearing
[D]. cylindrical roller bearing
✅ The correct answer is option C.
5264. The pressure exerted by an ideal gas is __________ of the kinetic energy of all the molecules contained in a unit volume of gas.
[A]. one-half
[B]. one-third
[C]. two-third
[D]. three-fourth
✅ The correct answer is option C.
5265. Simplex method is the method used for
[A]. value analysis
[B]. network analysis
[C]. linear programming
[D]. queuing theory
✅ The correct answer is option C.
5266. A drill considered as a cutting tool having zero rake, is known as a
[A]. flat drill
[B]. straight fluted drill
[C]. parallel shank twist drill
[D]. tapered shank twist drill
✅ The correct answer is option B.
5267. The instrument which has all the features of try-square, bevel protractor, rule and scriber, is
[A]. outside micrometer
[B]. inside micrometer
[C]. depth gauge micrometer
[D]. combination set
✅ The correct answer is option D.
5268. White cast iron has a high tensile strength and a low compressive strength.
[A]. Yes
[B]. No
null
null
✅ The correct answer is option B.
5269. Water gas is obtained by passing air and a large amount of steam over waste coal at about 650°C.
[A]. Correct
[B]. Incorrect
null
null
✅ The correct answer is option B.
5270. Smelting is the process of
[A]. removing the impurities like clay, sand etc. from the iron ore by washing with water
[B]. expelling moisture, carbon dioxide, sulphur and arsenic from the iron ore by heating in shallow kilns
[C]. reducing the ore with carbon in the presence of a flux
[D]. all of the above
✅ The correct answer is option C.