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Theory of machines
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q21 ⇒ The indicator using Watt mechanism is known as. Richard indicator [other wrong options] [Discuss in forum] Thompson indicator Simplex indicator Thomson indicator |
Q22 ⇒ Idler pulley is used. for applying tension [other wrong options] [Discuss in forum] for changing the direction of motion of the belt for increasing -velocity ratio all of the above |
Q23 ⇒ To obviate axial thrust, following gear drive is used. double helical gears having opposite teeth [other wrong options] [Discuss in forum] double helical gears having identical teeth single helical gear in which one of the teeth of helix angle a is more mutter gears |
Q24 ⇒ Higher pairs are those which have. point or line contact between the two elements when in motion [other wrong options] [Discuss in forum] surface contact between the two elements when in motion elements of pairs not held together mechanically two elements that permit relative motion |
Q25 ⇒ Peaucellier mechanism has. eight links [other wrong options] [Discuss in forum] six links four links twelve links |
Q26 ⇒ If the fixed link is changed in a kinematic chain, then relative motion of other links will remain same [other wrong options] [Discuss in forum] will change could change or remain unaltered depending oh which link is fixed will not occur |
Q27 ⇒ In S.H.M., the velocity vector w.r.t. displacement vector. leads by 90° [other wrong options] [Discuss in forum] lags by 90° leads by 180° are in phase |
Q28 ⇒ The number of links and instantaneous centers in a reciprocating engine mechanism are. 4, 6. [other wrong options] [Discuss in forum] 4, 4 4, 5 6, 4 |
Q29 ⇒ In a shape mechanism, the Corioli's component of acceleration will. exist [other wrong options] [Discuss in forum] not exist depend on position of crank unpredictable |
Q30 ⇒ Klein's construction is useful to determine. acceleration of various parts [other wrong options] [Discuss in forum] velocity of various parts displacement of various parts angular acceleration of various parts |
Q31 ⇒ Which of the following disciplines provides study of inertia forces arising from the combined effect of the mass and the motion of the parts. kinetics [other wrong options] [Discuss in forum] theory of machines applied mechanics mechanisms |
Q32 ⇒ The maximum value of the pressure angle in case of cam is kept as. 30° [other wrong options] [Discuss in forum] 10° 14° 20° |
Q33 ⇒ Any point on a link connecting double slider crank chain will trace a. ellipse [other wrong options] [Discuss in forum] straight line circle parabola |
Q34 ⇒ If some links are connected such that motion between them can take place in more than one direction, it is called. incompletely constrained motion [other wrong options] [Discuss in forum] partially constrained motion completely constrained motion successfully constrained motion |
Q35 ⇒ Which of the following would constitute a link. piston, piston-rod and cross head [other wrong options] [Discuss in forum] piston, piston rings and gudgeon pin piston, and piston rod piston rod and cross head |
Q36 ⇒ In problem 47, the chain is unconstrained when. L.H.S. < R.H.S. [other wrong options] [Discuss in forum] L.H.S. = R.H.S. L.H.S. > R.H.S. there is no such criterion for checking above requirement |
Q37 ⇒ It is required to connect two parallel shafts, the distance between whose axes is small and variable. The shafts are coupled by. Oldham's coupling [other wrong options] [Discuss in forum] universal joint knuckle joint flexible coupling |
Q38 ⇒ Governor is used in automobile to. to control SN [other wrong options] [Discuss in forum] decrease the variation of speed to control all of the above |
Q39 ⇒ The locus of a point on a thread unwound from a cylinder will be. involute [other wrong options] [Discuss in forum] a straight line a circle cycloid |
Q40 ⇒ A point on a link connecting double slider crank chain traces a. ellipse. [other wrong options] [Discuss in forum] straight line circle hyperbola |
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