22. Which of the following mechanism is obtained from lower pair
A.Gyroscope
B.All of the above.
C.Valve and valve gears
D.Generated straight line motions

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23. Which of the following would constitute a link
A.Piston, piston rings and gudgeon pin
B.Piston, piston-rod and cross head.
C.Piston rod and cross head
D.Piston, crank pin and crank shaft

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24. The Scott-Russell mechanism consists of
A.Sliding and turning pairs
B.Sliding and rotary pairs
C.Turning and rotary pairs
D.Sliding pairs only

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25. Davis steering gear consists of
A.Sliding pairs
B.Turning pairs
C.Rolling pairs
D.Higher pairs

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26. Ackermann steering gear consists of
A.Sliding pairs
B.Turning pairs
C.Rolling pairs
D.Higher pairs

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27. A completely constrained motion can be transmitted with
A.1 link with pin joints
B.2 links with pin joints
C.3 links with pin joints
D.4 links with pin joints

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28. Oldham's coupling is the
A.Second inversion of double slider crank chain
B.Third inversion of double slider crank chain
C.Second inversion of single slider crank chain
D.Third inversion of slider crank chain

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