The circumferential and longitudinal strains in a cylindrical boiler under internal steam pressure are ε_c and ε_l respectively. The change in volume of the boiler cylinder per unit volume will be

A pressure vessel is said to be a thin shell, if the ratio of wall thickness to its diameter is equal to 1/10.

A bolt of uniform strength can be developed by

The helix angle for single helical gears ranges from

In helical gears, the distance parallel to the axis, between similar faces of adjacent teeth, is called

When bevel gears connect two shafts whose axes intersect at an angle greater than a right angle and one of the bevel gears has a pitch angle of 90°, then they are known as

In helical gears, the distance parallel to the axis, between similar faces of adjacent teeth, is called

The bearings of heavy series have capacity __________ over the medium series.

A thin spherical shell of internal diameter d is subjected to an internal pressure p. If V is the storage capacity of shell, then its diameter will be

The velocity factor for ordinary cut gears operating at velocities upto 12.5 m/s is equal to

In order to withstand resistance to wear, the best profile of gear is

A saddle key __________ power through frictional resistance only.

The power transmitted by means of a belt depends upon

The buckling load will be maximum for a column, if

Which of the following screw thread is used for power transmission in one direction only?

Gears are casted by

The difference between the tooth space and the tooth thickness as measured on the pitch circle, is called

The size of a cam depends upon

Rivets are generally specified by

In a flange coupling, the bolts are subjected to

The V-belts are particularly suitable for __________ drives.

Which one of the following is a positive drive?

The rolling contact bearings as compared to sliding contact bearings have

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

The centrifugal tension in belts

In case of pressure vessels having closed ends, the fluid pressure induces

The yield point in static loading is __________ as compared to fatigue loading.

For high speed engines, the cam follower should move with

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.

For maximum power, the velocity of the belt will be

In the levers of first type, the mechanical advantage is ________ one.

When screw threads are to be used in a situation where power is being transmitted in one direction only, then the screw threads suitable for this will be

The stress induced in the belt is,

In levers, leverage is the ratio of

When a close coiled helical spring is compressed, its wire is subjected to

If a load W is applied instantaneously on a bar; Then the stress induced in bar will

Plastic flow in ductile materials

I.S. specifies following total number of grades of tolerances

When a bolt and nut is made of mild steel, then the effective height of nut is made equal to (where d = Nominal diameter of bolt)

The function of cutting oil when threading a pipe is to

The dedendum is the radial distance from the

If threads on a bolt are left hand, threads on nut will be

The following type of nut is used with alien bolt

According to I.B.R., when the thickness of boiler shell (t) is greater than 8 mm, then the diameter of rivet hole (d) is obtained by

According to I.B.R., when the thickness of the boiler shell (t) is less than 8 mm, then the diameter of the rivet hole (d) is obtained by

In second type of levers,

A circular shaft can transmit a torque of 5 kN-m. If the torque is reduced to 4 kN-m, then the maximum value of bending moment that can be applied to the shaft is

Shaft coupling is used in machinery to

A connecting rod subjected to an axial load may buckle with

Wire ropes as compared to cotton ropes