3461. By compounding the expansion of steam in two or more cylinders, the ratio of expansion
does not change
increases
decreases
✅ The correct answer is option C.
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.
3462. Fatigue test is carried out for
stresses varying between two limits of equal value, but of opposite sign
stresses varying between two limits of unequal value, but of opposite sign
stresses varying between two limits of unequal value but of same sign
all of the above
✅ The correct answer is option D.
3463. The diagram efficiency is the ratio of
workdone on the blades to the energy supplied to the blades
workdone on the blades per kg of steam to the total energy supplied per stage per kg of steam
energy supplied to the blades per kg of steam to the total energy supplied per stage per kg of steam
none of the above
✅ The correct answer is option A.
3464. In leaf springs, the longest leaf is known as
lower leaf
master leaf
upper leaf
none of these
✅ The correct answer is option B.
3465. Sand wash is a casting defect which
results in a mismatching of the top and bottom parts of a casting
results in general enlargement of the casting
occurs near the ingates as rough lumps on the surface of a casting
occurs as sand patches
✅ The correct answer is option C.
3466. Which of the following statement is incorrect about duralumin?
It is prone to age hardening
It can be forged
It has good machining properties
It is lighter than pur
✅ The correct answer is option D.
3467. Break even point is the point where
fixed and variable cost lines intersect
fixed and total cost lines intersect
variable and total cost lines intersect
sales revenue and tota
✅ The correct answer is option D.
3468. A diesel engine has compression ratio from
6 to 10
10 to 15
15 to 25
25 to 40
✅ The correct answer is option C.
3469. A petrol engine, during suction stroke draws
air only
petrol only
a mixture of petrol and air
✅ The correct answer is option C.
3470. The Wahl’s stress factor (K) for springs is given by (where )
✅ The correct answer is option D.