Question
a.
90° - φ
b.
45° - φ
c.
45° - φ/2
d.
45° + φ/2
Posted under Mechanical Engineering
Interact with the Community - Share Your Thoughts
Uncertain About the Answer? Seek Clarification Here.
Understand the Explanation? Include it Here.
Q. The efficiency of a square threaded screw is maximum if the helix angle is equal to (where φ = Angle of friction)
Similar Questions
Explore Relevant Multiple Choice Questions (MCQs)
Q. In designing thick cylinders, the equation used is
View solution
Q. A double fillet welded joint with parallel fillet weld of length l and leg s is subjected to a tensile force P. Assuming uniform stress distribution, the shear stress in the weld is given by
View solution
Q. Two shafts A and B are made of the same material. The diameter of shaft A is twice as that of shaft B. The power transmitted by the shaft A will be __________ of shaft B.
View solution
Q. Which of the following statement is correct?
View solution
Q. The taper on cotter and slot is made on both the sides.
View solution
Q. Teflon is used for bearings because of
View solution
Q. In designing a flange coupling, the pitch circle diameter of bolts is taken as (where d = Diameter of the shaft)
View solution
Q. The acme threads are usually found on
View solution
Q. A parallel sunk key, made of steel, is equally strong in shearing and crushing.
View solution
Q. In designing a key, it is assumed that the distribution of forces along the length of key
View solution
Q. In a belt drive, the velocity ratio is the inverse ratio of the diameters of driving and driven pulleys.
View solution
Q. In order to have a connecting rod equally strong in buckling about X-axis and Y-axis, the moment of inertia about X-axis should be __________ the moment of inertia about Y-axis.
View solution
Q. The bearing characteristic number in a hydrodynamic bearing depends upon
View solution
Q. A jam nut is a locking device in which
View solution
Q. The difference between the upper limit and lower limit of a dimension is called
View solution
Q. The algebraic difference between the actual size and the corresponding basic size is called actual deviation.
View solution
Q. The stiffness of a closely coiled helical spring subjected to an axial load W is equal to (where G = Modulus of rigidity, and n = Number of active coils)
View solution
Q. The average shear stress in the hollow shaft is smaller than the average shear stress in the solid shaft.
View solution
Q. The diameter of knuckle pin in a knuckle joint is usually taken as (where d = Diameter of the rod)
View solution
Q. The design of shafts made of brittle materials is based on
View solution
Recommended Subjects
Are you eager to expand your knowledge beyond Mechanical Engineering? We've handpicked a range of related categories that you might find intriguing.
Click on the categories below to discover a wealth of MCQs and enrich your understanding of various subjects. Happy exploring!