3871. A fixed beam is one which is fixed at __________ of its ends.
one
both
✅ 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.
3872. In ideal machines, mechanical advantage is __________ velocity ratio.
equal to
less than
greater than
✅ The correct answer is option A.
3873. 18/8 stainless steel consists of
18% nickel and 8% chromium
18% chromium and 8% nickel
18% nickel and 18% chromium
8% nickel and 8% chrom
✅ The correct answer is option B.
3874. When the gas is heated at constant volume, the heat supplied
increases the internal energy of the gas and increases the temperature of the gas
does some external work during expansion
Both (A) and (B)
None of these
✅ The correct answer is option A.
3875. Cores are used to
form internal cavities in the casting
improve mould surface
form a part of a green sand mould
all of these
✅ The correct answer is option D.
3876. The power transmitted through the pipe is maximum when the head lost due to friction is equal to
one-fourth of the total supply head
one-third of the total supply head
one-half of the total supply head
two-third of the total
✅ The correct answer is option B.
3877. In a reversed Brayton cycle, the heat is absorbed by the air during
isentropic compression process
constant pressure cooling process
isentropic expansion process
constant pressure expa
✅ The correct answer is option D.
3878. In full depth involute system, the smallest number of teeth in a pinion which meshes with rack without interference is
12
16
25
32
✅ The correct answer is option D.
3879. High speed steel cutting tools operate at cutting speeds __________ than carbon steel tools.
2 to 3 times lower
2 to 3 times higher
5 to 8 times higher
8 to 20 times higher
✅ The correct answer is option B.
3880. The size of cam depends upon
base circle
pitch circle
prime circle
pitch curve
✅ The correct answer is option A.