If a load W is applied instantaneously on a bar; Then the stress induced in bar will
If a load W is applied instantaneously on a bar; Then the stress induced in bar will
Elastic nut is a locking device in which
Elastic nut is a locking device in which
The ratio of driving tensions in V-belt drives is __________ flat belt drives.
The ratio of driving tensions in V-belt drives is __________ flat belt drives.
Which of the following is not correct procedure to increase the fatigue limit?
Which of the following is not correct procedure to increase the fatigue limit?
Which of the following statement is correct?
Which of the following statement is correct?
Crowning on pulley helps
Crowning on pulley helps
A triple riveted butt joint with double straps of unequal width is to be designed for a boiler shell. The pitch of the rivets in the outer row is double the pitch in the inner row and zigzag riveting is proposed. Which of the following statement is correct?
A triple riveted butt joint with double straps of unequal width is to be designed for a boiler shell. The pitch of the rivets in the outer row is double the pitch in the inner row and zigzag riveting is proposed. Which of the following statement is correct?
The dedendum is the radial distance from the
The dedendum is the radial distance from the
The helix angle for single helical gears ranges from
The helix angle for single helical gears ranges from
Castle nut is a locking device in which
Castle nut is a locking device in which
A steel containing _________ 0.8% carbon is known as hypo-eutectoid steel.
A steel containing _________ 0.8% carbon is known as hypo-eutectoid steel.
In the assembly of pulley, key and shaft
In the assembly of pulley, key and shaft
In a steam engine, the piston rod is usually connected to the cross-head by means of a
In a steam engine, the piston rod is usually connected to the cross-head by means of a
Which of the following is an anti-friction bearing?
Which of the following is an anti-friction bearing?
Which of the following statement is correct?
Which of the following statement is correct?
In a transverse fillet welded joint, the size of weld is __________ the throat of weld.
In a transverse fillet welded joint, the size of weld is __________ the throat of weld.
In radial cams, the follower moves
In radial cams, the follower moves
The application of third type levers is found in
The application of third type levers is found in
The function of cutting oil when threading a pipe is to
The function of cutting oil when threading a pipe is to
A tapered key which fits in a key-way in the hub and is flat on the shaft, is known as
A tapered key which fits in a key-way in the hub and is flat on the shaft, is known as
The stress which vary from a minimum value to a maximum value of the same nature (i.e. tensile or compressive) is called
The stress which vary from a minimum value to a maximum value of the same nature (i.e. tensile or compressive) is called
The shear plane in case of bolts should
The shear plane in case of bolts should
For steel, the ultimate strength in shear as compared to ultimate strength in tension is
For steel, the ultimate strength in shear as compared to ultimate strength in tension is
The radial distance of a tooth from the pitch circle to the top of the tooth is called
The radial distance of a tooth from the pitch circle to the top of the tooth is called
The bearings of heavy series have capacity __________ over the medium series.
The bearings of heavy series have capacity __________ over the medium series.
If the centre distance of the mating gears having involute teeth is varied within limits, the velocity ratio
If the centre distance of the mating gears having involute teeth is varied within limits, the velocity ratio
The value of Lewis form factor used in design of gears is
The value of Lewis form factor used in design of gears is
The piston rod of a steam engine is usually connected to the cross-head by means of
The piston rod of a steam engine is usually connected to the cross-head by means of
The strength of the unriveted plate (P) per pitch length is equal to
The strength of the unriveted plate (P) per pitch length is equal to
The ratio of circumferential stress to longitudinal stress in a thin cylinder subjected to an internal pressure is
The ratio of circumferential stress to longitudinal stress in a thin cylinder subjected to an internal pressure is
The standard length of the shaft is
The standard length of the shaft is
According to Indian standards, total numbers of tolerance grades are
According to Indian standards, total numbers of tolerance grades are
The backlash for spur gears depends upon
The backlash for spur gears depends upon
The centre distance between two meshing involute gears is equal to
The centre distance between two meshing involute gears is equal to
The strap end of a connecting rod of steam engine is joined by
The strap end of a connecting rod of steam engine is joined by
For unequal width of butt straps, the thicknesses of butt straps are
For unequal width of butt straps, the thicknesses of butt straps are
The creep in the belt is due to
The creep in the belt is due to
The distribution of the forces along the length of key fitted in a shaft
The distribution of the forces along the length of key fitted in a shaft
A tapered key which fits in a key way in the hub and is flat on the shaft, is known as
A tapered key which fits in a key way in the hub and is flat on the shaft, is known as
The groove angle of pulleys for V-belt is
The groove angle of pulleys for V-belt is
When a close coiled helical spring is compressed, its wire is subjected to
When a close coiled helical spring is compressed, its wire is subjected to
The most important dimension in the design of a nut is
The most important dimension in the design of a nut is
The application of second type levers is found in
The application of second type levers is found in
The initial tension (in newtons) in a bolt used for making a fluid tight joint like steam engine cover joints, is calculated by the relation (where d = Nominal diameter of bolt in mm)
The initial tension (in newtons) in a bolt used for making a fluid tight joint like steam engine cover joints, is calculated by the relation (where d = Nominal diameter of bolt in mm)
In case of V belt drive
In case of V belt drive
In thrust bearings, the load acts
In thrust bearings, the load acts
The permissible stress for carbon steel under static loading is generally taken as
The permissible stress for carbon steel under static loading is generally taken as
Split nut is a locking device in which
Split nut is a locking device in which
The deflection of a cantilever beam under load W is 8. If its width is halved, then the deflection under load W will be
The deflection of a cantilever beam under load W is 8. If its width is halved, then the deflection under load W will be
A chain drive transmits __________ power as compared to belt drive.
A chain drive transmits __________ power as compared to belt drive.
In levers, leverage is the ratio of
In levers, leverage is the ratio of
The anti-friction bearings
The anti-friction bearings
In cylindrical cams, the follower moves
In cylindrical cams, the follower moves
If the centre distance of the mating gears having involute teeth is increased, then the pressure angle
If the centre distance of the mating gears having involute teeth is increased, then the pressure angle
A bolt is designed on the basis of __________ with a large factor of safety.
A bolt is designed on the basis of __________ with a large factor of safety.
The edges of a boiler plate are bevelled to an angle of
The edges of a boiler plate are bevelled to an angle of
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)
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)
A taper key which fits half in the key way of the hub and half in the key way of shaft, is known as
A taper key which fits half in the key way of the hub and half in the key way of shaft, is known as
Plastic flow in ductile materials
Plastic flow in ductile materials
Surface endurance limit of gear material is dependent upon its
Surface endurance limit of gear material is dependent upon its
The taper on a rectangular sunk key is
The taper on a rectangular sunk key is
Applications in which stresses are encountered in one direction only uses following type of threads
Applications in which stresses are encountered in one direction only uses following type of threads
In a multiple V-belt drive, when a single belt is damaged, it is preferable to change the complete set in order to
In a multiple V-belt drive, when a single belt is damaged, it is preferable to change the complete set in order to
In composite or reverse laid ropes
In composite or reverse laid ropes
An open coiled helical compression spring 'A' of mean diameter 50 mm is subjected to an axial load ‘W’. Another spring 'B' of mean diameter 25 mm is similar to spring 'A' in all respects. The deflection of spring 'B' will be __________ as compared to spring 'A'.
An open coiled helical compression spring 'A' of mean diameter 50 mm is subjected to an axial load ‘W’. Another spring 'B' of mean diameter 25 mm is similar to spring 'A' in all respects. The deflection of spring 'B' will be __________ as compared to spring 'A'.
When the screw in a mechanical screw jack rotates, the load kept on the top of it moves
When the screw in a mechanical screw jack rotates, the load kept on the top of it moves
When the speed of belt increases,
When the speed of belt increases,
In order to avoid tearing of the plate at an edge, the distance from the centre line of the rivet hole to the nearest edge of the plate should be equal to (where d = Diameter of rivet hole)
In order to avoid tearing of the plate at an edge, the distance from the centre line of the rivet hole to the nearest edge of the plate should be equal to (where d = Diameter of rivet hole)
The longitudinal stress is __________ of the circumferential stress.
The longitudinal stress is __________ of the circumferential stress.
Jam nut is a locking device in which
Jam nut is a locking device in which
Failure of a material is called fatigue when it fails
Failure of a material is called fatigue when it fails
When an open coiled helical compression spring is subjected to an axial compressive load, the stress induced in the wire is
When an open coiled helical compression spring is subjected to an axial compressive load, the stress induced in the wire is
In a flange coupling, the flanges are coupled together by means of
In a flange coupling, the flanges are coupled together by means of
The shear stress at a point in a shaft subjected to a torque is
The shear stress at a point in a shaft subjected to a torque is
A bench vice has following type of threads
A bench vice has following type of threads
The building up of worn and undersized parts, subjected to repeated loads by electroplating is
The building up of worn and undersized parts, subjected to repeated loads by electroplating is
In a butt welded joint, the size of weld is __________ the throat of weld.
In a butt welded joint, the size of weld is __________ the throat of weld.
Factor of safety for fatigue loading is the ratio of
Factor of safety for fatigue loading is the ratio of
Which of the following statement is correct?
Which of the following statement is correct?
Which of the following screw thread is used for power transmission in one direction only?
Which of the following screw thread is used for power transmission in one direction only?
If threads on a bolt are left hand, threads on nut will be
If threads on a bolt are left hand, threads on nut will be
If a material fails below its yield point, failure would be due to
If a material fails below its yield point, failure would be due to
Gear box is used
Gear box is used
Which of the following statement is correct?
Which of the following statement is correct?
I.S. specifies following total number of grades of tolerances
I.S. specifies following total number of grades of tolerances
The condition for maximum power transmission is that the maximum tension in the flat belt should be equal to
(Where, Pc = tension in belt due to centrifugal force)
The condition for maximum power transmission is that the maximum tension in the flat belt should be equal to
(Where, Pc = tension in belt due to centrifugal force)
For crank shaft bearings, the ratio of the length of the journal to its diameter is_________.
For crank shaft bearings, the ratio of the length of the journal to its diameter is_________.
If T is the actual number of teeth on a helical gear and φ is the helix angle for the teeth, then formative number of teeth is written as
If T is the actual number of teeth on a helical gear and φ is the helix angle for the teeth, then formative number of teeth is written as
The constant factor in case of R10 series of preferred numbers is
The constant factor in case of R10 series of preferred numbers is
A sliding bearing which can support steady loads without any relative motion between the journal and the bearing, is called
A sliding bearing which can support steady loads without any relative motion between the journal and the bearing, is called
The allowable static stress for steel gears is approximately __________ of the ultimate tensile stress.
The allowable static stress for steel gears is approximately __________ of the ultimate tensile stress.
The ends of the leaves of a semi-elliptical leaf spring are made triangular in order to
The ends of the leaves of a semi-elliptical leaf spring are made triangular in order to
Which of the following screw thread is adopted for power transmission in either direction?
Which of the following screw thread is adopted for power transmission in either direction?
The railway carriage couplings have
The railway carriage couplings have
The steel pulleys are __________ in weight than cast iron pulleys of the same capacity.
The steel pulleys are __________ in weight than cast iron pulleys of the same capacity.
The design of the pressure vessel is based on
The design of the pressure vessel is based on
When two non-intersecting and non-coplanar shafts are connected by gears, the arrangement is known as
When two non-intersecting and non-coplanar shafts are connected by gears, the arrangement is known as
According to Indian standard specifications, 100 H6/g5 means that the
According to Indian standard specifications, 100 H6/g5 means that the
The radial distance from the __________ to the clearance circle is called working depth.
The radial distance from the __________ to the clearance circle is called working depth.
When the length of the journal is equal to the diameter of the journal, then the bearing is said to be a
When the length of the journal is equal to the diameter of the journal, then the bearing is said to be a
