Lewis form factor for thefull depth involute system is equal to 0.- 0.841/T.
The application of second type levers is found in
The thickness of key is usually taken equal to one-sixth of diameter of shaft.
In skew bevel gearing, the axes of shafts are
The spindles of bench vices are usually provided with knuckle threads.
The railway carriage couplings have
Two helical springs of the same material and of equal circular cross-section, length and number of turns, but having radiimm andmm, kept concentrically (smaller radius spring within the larger radius spring), are compressed between two parallel planes with a load W. The inner spring will carry a load equal to
A chain drive transmits __________ power as compared to belt drive.
Which of the following statement is correct?
The taper on cotter and slot is made on both the sides.
Teflon is used for bearings because of
In designing a flange coupling, the pitch circle diameter of bolts is taken as (where d = Diameter of the shaft)
The acme threads are usually found on
The product of the diametral pitch and circular pitch is equal to
The ratio of pitch circle diameter in millimetres to the number of teeth, is called
In the levers of third type, the mechanical advantage is __________ one.
In a marine flange coupling, the pitch circle diameter of bolts is taken as
In a butt welded joint, the size of weld is __________ the throat of weld.
Creep in belt is due to
While designing a screw in a screw jack against buckling failure, the end conditions for the screw are taken as
According to Indian standard specifications,H6/g5 means that
The edges of the boiler plates are bevelled to an angle of
The steel widely used for motor car crankshafts is
Which of the following key is preferred for the condition when a large amount of impact type torque is to be transmitted in both direction of rotation?
A quarter turn belt drive is used when the shafts are arranged at right angles and rotate in one definite direction.
The minimum number of teeth on the pinion which will mesh with any gear without interference forfull depth involute teeth will be
When a closely coiled helical spring is subjected to a couple about its axis, the stress induced in the wire material of the spring is
A quarter turn belt drive is used when the shafts are arranged at right angles and rotate in one definite direction.
The smallest diameter of an external or internal screw thread is known as
Rankine Gordon formula for buckling is valid for
The smallest diameter of an external or internal screw thread is known as
When compared to the rod of the same diameter and material, a wire rope
Which of the following cotter joint will be used to connect strap end of a connecting rod ?
According to Indian standard specifications, a plain carbon steel designated by 40C8 contains carbon
A bolt of Mx 2 means that
In a journal bearing, the load on the bearing is __________ to the axis of the journal.
The process which improves the machinability of steels, but lowers the hardness and tensile strength is
The angle of twist of shaft is
The stretching in a belt can be controlled by __________ the stress in the belt.
According to Indian standards, total number of fundamental deviations are
The stretching in a belt can be controlled by __________ the stress in the belt.
When the screw in a mechanical screw jack rotates, the load kept on the top of it moves
The machine screws are
In designing a sleeve coupling, outer diameter of the sleeve is taken as (where d = Diameter of the shaft)
An imaginary circle which by pure rolling action gives the same motion as the actual gear, is called
Which of the following statement is wrong ?
A long helical spring having a spring stiffness ofkN/m and number of turnsbreaks into two parts with number of turnseach in both the parts. If the two parts are connected in series, then the softness of the resultant spring will be
The distribution of the forces along the length of key fitted in a shaft
In the calculation of induced shear stress in helical springs, the Wahl's stress factor is used to take care of
Which of the following bearing is preferred for oscillating conditions?