Question Set 177

11.

In second type of levers,

A.	load is in between the fulcrum and effort
B.	effort is in between the fulcrum and load
C.	fulcrum is in between the load and effort
D.	none of these

Answer: Option A

12.

Soderberg relation is based on __________ of the material whereas all other failure relation for dynamic loading are based on ultimate strength of the material.

A.	elastic strength
B.	yield strength
C.	shear strength

Answer: Option B

13.

In a flange coupling, the flanges are coupled together by means of

A.	bolts and nuts
B.	studs
C.	headless taper bolts
D.	none of these

Answer: Option A

14.

A transmission shaft includes

A.	counter shaft
B.	line shaft
C.	over head shaft
D.	all of these

Answer: Option D

15.

According to I.B.R., shearing resistance required to shear off the rivet per pitch length (in double shear) is (where n = Number of rivets per pitch length)

A.	d² x τ x n
B.	1.875 x d² x τ x n
C.	2 x d² x τ x n
D.	3 x d²x τ x n

Answer: Option B

16.

A locking device in which the bottom cylindrical portion is recessed to receive the tip of the locking set screw, is called

A.	castle nut
B.	jam nut
C.	ring nut
D.	sawn nut

Answer: Option C

17.

Slenderness ratio is the ratio of

A.	maximum size of column to minimum size of column
B.	width of column to depth of column
C.	effective length of column to least radius of gyration of the column
D.	effective length of column to width of column

Answer: Option C

18.

A crankshaft is a __________ shaft.

A.	transmission
B.	machine

Answer: Option B

19.

According to Indian standard specifications, 100 H6/g5 means that the

A.	actual size is 100 mm
B.	basic size is 100 mm
C.	difference between the actual size and basic size is 100 mm
D.	none of the above

Answer: Option B

20.

A plate with an elliptical hole in the centre, with semi-major axis (a) perpendicular to the direction of loading and semi-minor axis (b) along the direction of loading, is subjected to a pull P. The maximum stress induced at the edge of the hole is equal to (where σ = Stress for a plate with no hole i.e. nominal stress)

A.
B.
C.
D.

Answer: Option B