Mechanical Engineering Objective Questions
61-Reynold’s number of stream lined flow is:
(A) Less than 2000
(B) More than 2000
(C) More than 6000
(D) None of the above
62-The study of the behavior and application of compressed air is known as
(A) Dynamics
(B) Aero dynamics
(C) Hydraulics
(D) Pneumatics
63-The science which deals with the behavior of liquids at rest is:
(A) Hydro statics
(B) Hydrodynamics
(C) Hydro kinematics
(D) Hydrostatics
64-Choose the spark erosion technique from the following:
(A) EDM
(B) AJM
(C) CHM
(D) USM
65-Choose the duplicating device from the following:
(A) Pantograph
(B) Jig saw
(C) Hydraulic intensifier
(D) Indexing head
66-In a power press the connecting rod to transmit motion from the main drive to slide is known as:
(A) Pitman
(B) Stripper
(C) Punch
(D) Guide post
67-Slip bushes are used in:
(A) Drill jig
(B) Milling fixture
(C) Grinding fixture
(D) Welding fixture
68-The space between the punch and die opening is:
(A) Clearance
(B) Allowance
(C) Deviation
(D) Interference
69-The phenomenon of spring back is associated with:
(A) Bending
(B) Milling
(C) Taper turning
(D) Trimming
70-The die in which the cutting operation is combined with forming operation is:
(A) Progressive die
(B) Compound die
(C) Blanking die
(D) Combination die
ANSWERS:
61-(A), 62-(D), 63-(D), 64-(A), 65-(A), 66-(A), 67-(A), 68-(A), 69-(A), 70-(D)