Which of the following predicts the failure stress reasonably well for brittle materials under static biaxial loading?

In the absence of friction, a simple machine is an ideal machine if the efficiency is?

Which of the following is a form of an inclined plane?

What is the ideal mechanical advantage of a machine that changes only the direction of the input forces?

What is the combination of applied normal and shear stresses that produces maximum principal normal stress, with a third principal stress between or equivalent to the extremes?

What is the other term for the maximum-shear-stress theory, as a failure prediction theory?

For a kinematic chain to be considered as mechanism

The motion of shaft in a circular hole is an example of _____ motion.

The instaneous center of rotation of a rigid thin disc rolling without slip on a plane rigid surface is located at?

For a 4-bar linkage in toggle position, the value of mechanical advantage is

It is a correction factor used to account for the non uniform stress distributions.

Fatigue failure occurs when a part is subjected to:

A kinematic chain needs a minimum:

The total permissible variation in the size of dimension: the difference between the limit of size.

The total deformation measured in the direction of the line of stress

The maximum stress to which a material can be subjected without a trace of any permanent set remaining upon a complete withdrawal of the stress.

Which of the following steel with 0.3% - 0.47% mean carbon content and has low-hardenability?

Which of the following is a special type of nickel that is corrosion resistant and has a high ductility and heat resistance?

In a gramophones for adjusting the speed of the tum-table, what type of governor is commonoly used?

Ackermann steering gear is made up of

A type of key in which width and thickness are equal is called as

Which of the following cannot be a poisson's ratio of material?

While designing a parallel sunk key it is assumed that the distribution of force along the length of the key

What type of key that allows the hub to move along the shaft but prevents the rotation of the shaft?

The speed at which the center of mass will be equal the deflecting forces on the shaft: the shaft with its attached bodies will then vibrate violently since teh centrifugal force changes its direction as the shaft turns in:

Which type of key is used for mounting shifting gears in gear boxes?

It is used for permanent fits and similar to involute splines except that the pressure angle is 14.5

What is the maximum shaft angle for a single hooke's coupling?

Universal coupling is:

Splines are used when:

In bolts design, the quotient of the proof load and the tensile stress area is called

It is the distance in inches a screw thread (a helix) advances axially in one turn.

In bolts design, proof strength corresponds approximately how many percent of the 0.2 percent offset yield strength?

What type of bolt threaded on both ends and can be used where a through bolt is impossible?

What type of bolt distinguished by a short portion of the shank underneath the head being square or finned or ribbed?

The crest diameter of a screw thread is the same as:

A tool bit for cutting an american national thread should be ground with an angle of:

The maximum efficiency of self locking screw is

Which of the following screw thread is adopted for power transmission in either direction?

These clutches produce positive coupling between the two shafts, regardless of direction of rotation.

Herring bone gears are which:

In usual spur gearing, which of the following statement(s) is correct?

A gear is one in which angle is 90 degrees that is the pitch cone has become a plane.

Which type of gears are used for shaft axes having an offset?

One of the causes of spur gear tooth breakage is the unbalanced load on one end of the tooth that results in higher stresses than when the load is evenly distributed. To minimize this problem, the face width "b" should not be greater than the thickness (or pitch) of the tooth. In the absence of test values, the following can be a guide:

What type of gear which can transmit power at a certain angle?

It is used to change rotary motion to reciprocating motion

In a gear design, the ratio of the pitch diameter in inches to the number of teeth

For evenly distributed and uniform wear on each meshing gear tooth, the ideal design practice is to consider a:

It refers to the surface of the gear between the fillets of adjacent teeth.

If a set of spur gears are made installed and lubricated properly, they normally may be subjected to failures like:

In designing gears for power transmission, consider an efficiency of _____ as recommended.

The design of gear on account of Spott's equation which account for dynamic load is based on

For a proper design and longer gear life

The train value of gear train is _____

The gear train usually employed in clocks is a

A reverted gear train is one in which the output shaft and input shaft

In a simple gear train, if the number of idlers gears is odd, then the direction of motion of driven gear will

In case of spur gears the flank of the tooth is

Gear used to transmit power at high velocity ratios between non intersecting shafts that are usually but not necessarily at right angle

Which of the following statements is correct for an oilness bearing?

It is the ability to deform plastically to compensate for irregularities in bearing assembly. How do you call this?

It is a bearing that permits constrained relative motion of rigid parts; lubricant is generally inserted or supplied between the mating surfaces to reduce friction and wear, and to carry away the heat generated.

In practice and theory as well, what is the allowed permissible misalignment in cylindrical and tapered roller bearings?

In practice and theory as well, the misalignment of spherical bearings should not exceed how many radians?

To avoid scoring in the bearing surface and the shaft due to contamination or absorption of the fine dirt in the bearing during operation/lubrication the bearing material to apply should have good ____ properties.

A general rule of thumb for cast iron rim flywheels of average size is that the mean velocity should not exceed?

If the rotating mass of a rim type flywheel is distributed on another rim type flywheel whose mean radius is half the mean radius of the former, then energy stored in the latter at the same speed will be

In which one of the following is a flywheel generally employed?

The rim of the flywheel is subjected to

Spring back metal forming depends on _____

What is the best method for increasing a spring's fatigue life?

These springs are made from one or more flat strips of brass, bronze, steel or other materials loaded as cantilevers or simple beam

The maximum shear stress occurs on the outermost fiber of a circular shaft under torsion. In a close-coiled helical spring the maximum shear stress occurs on the

The compliance of the spring is the:

There are two basic types of torsion springs, one which is the flat coil spring also known as power spring or

What is the recommended speed for leather belt?

What is the recommended speed for fabric belts?

What is usually the lose factor for most wire ropes and chains with 180 deg contact at low speeds?

Based on experience, what is the most economical design belt speed?

What is the most suitable material in a TIG welding process?

The transverse fillet welded joints are designed for

The parallel fillet welded joints are designed for

Hand sheers can be used for cutting sheets up to

Projection welding belongs to what category of welding process?

A weld place in a groove between the abutting members

A fillet welds whose size is equal to the thickness of the thinner joint member

Taylor's equation relates cutting speed V and tool life T for particular combination of tool and workpiece , VT^n = constant. This equation is also known as

Uses high energy electrical discharges to shape electrically conducting workpiece

Removes heat by electrolysis in a high current depletion operation

A zinc coating applied to low carbon steel to improve corrosion resistance. The coating can be applied in a hot dip bath, by electroplating or by tumbling

The diffusing of aluminum into a steel surface, producing an aluminum oxide that protects the steel from high temperature corrosion

All of the following are crystalline point defects except

Which of the following processes produce a refined grain structure and eventually increased stength and ductility of the material?

It is the process in which metal is dropped in dilute acid solutions to remove dirt , grease, and oxides

The joints produced bu this method are as strong as the parent metal

Forging of mild steel is done at about:

The process of making bolt heads by forging is known as

Plain butt welding process is used for welding plates approximately up to

The following process us preferred for welding non ferrous metals