Mechanical Engineering : Theory Of Machines QUESTIONS AND ANSWERS :: part4 : 11 to 15
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
11.Open pairs are those which have |
| point or line contact between the two elements when in motion |
| surface contact between the two elements when in motion |
| elements of pairs not held together mechanically |
| two elements that permit relative motion |
| none of the above. |
12.A pantograph is a mechanism with |
| lower pairs |
| higher pairs |
| rolling pairs |
| turning pairs |
| spherical pairs. |
13.A chain comprises of 5 links having 5 joints. Is it kinematic chain ? |
| yes |
| no |
| it is a marginal case |
| data are insufficient to determine it |
| unpredictable. |
14.Which of the following mechanisms produces mathematically an exact straight line motion |
| Grasshopper mechanism |
| Watt mechanism |
| Peaucellier's mechanism |
| Tchabichiff mechanism |
| Ackermann mechanism. |
15.For a kinematic chain to be considered as mechanism |
| two links should be fixed |
| one link should be fixed |
| none of the links should be fixed |
| there is no such criterion |
| none of the above. |
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