Que: What come next from 1,2,3,4,5 options?

Que: What come next from 1,2,3,4,5 options?

a)

b)

c)

Que: In a fusion welding process,

(a) only heat is used 
(b) only pressure is used
(c) combination of heat and pressure is used 
(d) none of these

Ans: (a)

Que: Two shafts will have equal strength, if

(a) diameter of both the shafts is same
(b) angle of twist of both the shafts is same
(c) material of both the shafts is same
(d) twisting moment of both the shafts is same

Ans: (d)

Que: A footstep bearing and a rotor of a vertical turbine forms an example of

1. Incompletely constrained motion

2. Partially constrained motion

3. Completely constrained motion

4. Sucessfully constrained motion

Ans: 4
Explaination: There are six degree of freedon three translation

and three rotational and constarint motion is

 refered when pair of machine element are move or

 rotate in a required motion with unnessesary

 motion are restricted thats type of motion are

 called constrained motion in above example foot step bearing and rotor only 2 degree of freedom 1

rotation cw and acw and 1 translation up and

down but translation dof are restricted by gravity

 self wait of rotor so that type of constrain motion

 are called succesfully constrained motion.