MECHANICAL ENGINEERING MCQ SECTION 35

341. Closed packed hexagonal space lattice is found in

(A) Alpha-iron, tungsten, chromium and molybdenum

(B) Gamma-iron, aluminium, copper, lead, silver and nickel

(C) Zinc, magnesium, cobalt, cadmium, antimony and bismuth

(D) None of the above

Answer: -Zinc, magnesium, cobalt, cadmium, antimony and bismuth

342. The reason why the pressure vessels are not made of rectangular shape is

(A) These are difficult to fabricate

(B) It has been a practice to use cylindrical vessels

(C) They are not economical

(D) None of the above

Answer: -They are not economical

343. A beam will have uniform strength if

(A) Bending stress is same at every section along its longitudinal axis

(B) Deflection is same throughout the beam

(C) Bulk modulus is same throughout the beam

(D) None of the above

Answer: -Bending stress is same at every section along its longitudinal axis

344. In a beam, the neutral plane

(A) Lies at the bottom most fibre

(B) Is one whose length remains unchanged during the deformation

(C) Is in the middle

(D) None of the above

Answer: -Is one whose length remains unchanged during the deformation

345. In linear programming the shadow prices are

(A) The values assigned to one unit of capacity

(B) Maximum cost per item

(C) Cost of bought out items

(D) Cost of items manufactured in the plant

Answer: -The values assigned to one unit of capacity

346. Expending function consist keeping a watch on

(A) Operators activity

(B) Flow of material and in case of trouble locate source of trouble

(C) Minimizing the delays

(D) Making efficient dispatching

Answer: -Flow of material and in case of trouble locate source of trouble

347. If the unit ordering cost is doubled, then the E.O.Q. will

(A) Be halved

(B) Be doubled

(C) Increase by 1.414 times

(D) Decrease by 1.414 times

Answer: -Increase by 1.414 times

348. The Standard time of an operation is defined as the time taken by a

(A) Faster worker to perform that operation

(B) Slow worker to perform that operation

(C) Trained worker to perform that operation while working at a steady pace

(D) None of the above

Answer: -Trained worker to perform that operation while working at a steady pace

349. Abbreviated work factor data is applied for

 (A) Material handling operation

(B) Maintenance operation

 (C) Packing and shipping operation

(D) all of the above

Answer: -all of the above

350. Which of the following is not used as a refrigerant?

(A) Ammonia

(B) Carbon Monoxide

(C) Carbon Dioxide

(D) Sulphur Dioxide

Answer: -Carbon Monoxide