Theory of Machine The velocity of a flat-faced follower when it has contact with the flank of a circular arc cam, is given by ωR cosθ ω(R - r₁) sinθ ω(R - r₁) cosθ ωr₁ sinθ ωR cosθ ω(R - r₁) sinθ ω(R - r₁) cosθ ωr₁ sinθ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine There are six gears A, B, C, D, E and F in a compound train. The numbers of teeth in the gears are 20, 60, 30, 80, 25 and 75 respectively. The ratio of angular speeds of the driven (F) to the driver (A) of the drive is 1/24 1/8 12 4/15 1/24 1/8 12 4/15 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The two elements of a pair are said to form a _________ when they permit relative motion between them. Open pair Sliding pair None of these Kinematic pair Open pair Sliding pair None of these Kinematic pair ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A rotor which is balanced statically but not dynamically is supported on two bearings L apart and at high speed of the rotor, reaction on the left bearing is R. The right side of the bearing is shifted to a new position 2L apart from the left bearing. At the same rotor speed, dynamic reaction on the left bearing in the new arrangement will Remain same as before Become equal to R/2 Become equal to 2R Become equal to R/4 Remain same as before Become equal to R/2 Become equal to 2R Become equal to R/4 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Angle of dwell of cam is defined as the angle Through which the cam rotates during the period in which the follower remains in the highest position Moved by the cam from the instant the follower begins to rise, till it reaches its highest position Of rotation of the cam for definite displacement of the follower During which the follower returns to its initial position Through which the cam rotates during the period in which the follower remains in the highest position Moved by the cam from the instant the follower begins to rise, till it reaches its highest position Of rotation of the cam for definite displacement of the follower During which the follower returns to its initial position ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The velocity of a particle moving with simple harmonic motion, at any instant is given by (where ω = Displacement of the particle from mean position) ω² √(r² - x²) ω √(r² - x²) ω √(x² - r²) ω² √(x² - r²) ω² √(r² - x²) ω √(r² - x²) ω √(x² - r²) ω² √(x² - r²) ANSWER DOWNLOAD EXAMIANS APP
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