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Theory Of Machine
Test Description: Game To Give Answer To multiple choice question.
Instructions: Answer all questions to get your test result.
1) 1. The motion between a pair which takes place in __________ is known as incompletely constrained motion.
A
B) Two directions only
B
(A) One direction only
C
(C) More than one directio
D
(D) None of these
2) The frictional torque transmitted in a flat pivot bearing, considering uniform pressure, is (where μ = Coefficient of friction, W = Load over the bearing, and R = Radius of bearing surface)
A
(D) μ W R
B
(C) (3/4) μ W R
C
(B) (2/3) μ W R
D
(A) (1/2) μ W R
3) A typewriter mechanism has 7 numbers of binary joints, six links and none of higher pairs. The mechanism is
A
(B) Not sound
B
(C) Soundness would depend upon which link is kept fixed
C
(A) Kinematically sound
D
D) Data is not sufficient to determine same
4) The maximum efficiency of spiral gears is (where θ = Shaft angle, and φ = Friction angle)
A
(C) cos (θ + φ) + 1/ cos (θ - φ) + 1
B
(D) cos (θ - φ) + 1/ cos (θ + φ) + 1
C
(B) cos (θ - φ) + 1/ sin (θ + φ) + 1
D
(A) sin (θ + φ) + 1/ cos (θ - φ) + 1
5) If the opposite links of a four bar linkage are equal, the links will always form a
A
(A) Triangle
B
(C) Parallelogram
C
(D) Pentagon
D
(B) Rectangle
6) The velocity of a flat-faced follower when it has contact with the flank of a circular arc cam, is given by
A
(C) ω(R - r₁) sinθ
B
(D) ωr₁ sinθ
C
(A) ωR cosθ
D
(B) ω(R - r₁) cosθ
7) Two systems shall be dynamically equivalent when
A
(C) M.I. of two about an axis through e.g. is equal
B
(B) C.G. of two coincides
C
(D) All of the above
D
(A) The mass of two are same
8) The motion of a shaft in a circular hole is an example of
A
(D) None of these
B
(C) Successfully constrained motion
C
(A) Completely constrained motion
D
(B) Incompletely constrained motion
9) A rotary internal combustion engine has __________ cylinders.
A
(C) Six
B
(A) Four
C
(D) Seven
D
(B) Five
10) A point B on a rigid link AB moves with respect to A with angular velocity ω rad/s. The total acceleration of B with respect to A will be equal to
A
(A) Vector sum of radial component and Coriolis component
B
(B) Vector sum of tangential component and Coriolis component
C
(C) Vector sum of radial component and tangential component
D
(D) Vector difference of radial component and tangential component
*select an answer for all questions
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