Search
.Management Sciences
Category: Theory of Machines
The approximate straight line mechanism is a____________________?
A. four bar linkage
B. 6 bar linkage
C. 8 bar linkage
D. 3 bar linkage
E. 5 bar linkage
The values of velocity and acceleration of piston at near dead center for a slider-crank mechanism will be________________?
A. 0, and more than co2r
B. 0, and less than coV
C. 0, 0
D. cor, 0
E. none of the above
Lower pairs are those which have___________________?
A. point or line contact between the two elements when in motion
B. surface contact between the two elements when in motion
C. elements of pairs not -held together mechanically
D. two elements that permit relative motion
E. none of the above
Peaucellier mechanism has__________________?
A. eight links
B. six links
C. four links
D. twelve links
E. five links
Klein’s construction can be used to determine acceleration of various parts when the crank is at_________________?
A. inner dead centre
B. outer dead centre
C. right angles to the link of the stroke
D. at 45° to the line of the stroke
E. all of the above
In an ideal machine, the output as compared to input is_______________?
A. less
B. more
C. equal
D. may be less or more depending on efficiency
E. always less
Hart mechanism has________________?
A. eight links
B. six links
C. four links
D. twelve links
E. five links
The e.g. of a link in any mechanism would experience_________________?
A. no acceleration
B. linear acceleration
C. angular acceleration
D. both angular and linear accelerations
E. none of the above
Which of the following mechanisms produces mathematically an exact straight line motion____________________?
A. Grasshopper mechanism
B. Watt mechanism
C. Peaucellier’s mechanism
D. Tchabichiff mechanism
E. Ackermann mechanism
In its simplest form, a cam mechanism consists of following number of links___________________?
A. 1
B. 2
C. 3
D. 4
E. none
Recent Comments