Q.1
Elastic nut is a locking device in which
Q.2
Jam nut is a locking device in which
Q.3
Split nut is a locking device in which
Q.4
According to Indian standards, total numbers of fundamental deviations are
Q.5
A bolt is designed on the basis of __________ with a large factor of safety.
Q.6
The longitudinal stress is __________ of the circumferential stress.
Q.7
The constant factor in case of R10 series of preferred numbers is
Q.8
Resistance to fatigue of a material is measured by
Q.9
The resistance to fatigue of a material is measured by
Q.10
The distribution of the forces along the length of key fitted in a shaft
Q.11
The ratio of driving tensions in V-belt drives is __________ flat belt drives.
Q.12
Castle nut is a locking device in which
Q.13
When the length of the journal is equal to the diameter of the journal, then the bearing is said to be a
Q.14
Allen bolts are
Q.15
Rivets are generally specified by
Q.16
Factor of safety for fatigue loading is the ratio of
Q.17
Crowning on pulley helps
Q.18
The most important dimension in the design of a nut is
Q.19
In composite or reverse laid ropes
Q.20
A bench vice has following type of threads
Q.21
The strap end of a connecting rod of steam engine is joined by
Q.22
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
Q.23
The value of Lewis form factor used in design of gears is
Q.24
The design of the pressure vessel is based on
Q.25
In the assembly of pulley, key and shaft
Q.26
The groove angle of pulleys for V-belt is
Q.27
When the speed of belt increases,
Q.28
In a flange coupling, the flanges are coupled together by means of
Q.29
A steel containing _________ 0.8% carbon is known as hypo-eutectoid steel.
Q.30
The application of third type levers is found in
Q.31
The size of a gear is usually specified by
Q.32
An alien bolt is
Q.33
The stress which vary from a minimum value to a maximum value of the same nature (i.e. tensile or compressive) is called
Q.34
For crank shaft bearings, the ratio of the length of the journal to its diameter is_________.
Q.35
For unequal width of butt straps, the thicknesses of butt straps are
Q.36
The application of second type levers is found in
Q.37
The fatigue life of a part can be improved by
Q.38
Which of the following property is desirable in parts subjected to shock and impact loads?
Q.39
The ratio of driving tensions for flat belts, neglecting centrifugal tension, is (where T₁, and T₂ = Tensions on the tight and slack sides of belt respectively, μ = Coefficient of friction, between the belt and pulley, and θ = Angle of contact)
Q.40
The deflection of a cantilever beam under load W is 8. If its width is halved, then the deflection under load W will be
Q.41
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)
Q.42
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)
Q.43
According to Indian standards, total numbers of tolerance grades are
Q.44
The ratio of circumferential stress to longitudinal stress in a thin cylinder subjected to an internal pressure is
Q.45
A chain drive transmits __________ power as compared to belt drive.
Q.46
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'.
Q.47
The radial distance from the __________ to the clearance circle is called working depth.
Q.48
Which of the following screw thread is adopted for power transmission in either direction?
Q.49
The building up of worn and undersized parts, subjected to repeated loads by electroplating is
Q.50
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?
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