Q.1
Two shafts ‘A’ and ‘B’ under pure torsion are of identical length and identical weight and are made of the same material. The shaft ‘A’ is solid and the shaft ‘B’ is hollow. We can say that
Q.2
18/8 steel contains
Q.3
In order to ensure self locking in a screw jack, it is essential that helix angle is __________ friction angle.
Q.4
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.
Q.5
Lewis equation in gears is used to find the
Q.6
Buttress threads are usually found on
Q.7
The acme threads are usually found on
Q.8
The square threads are usually found on
Q.9
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
Q.10
The velocity of sliding __________ the distance of the point of contact from the pitch point.
Q.11
The flank of the tooth is the
Q.12
The face of the tooth is the
Q.13
The function of the washer is to
Q.14
In order to obtain bolt of uniform strength
Q.15
The notch angle of the Izod impact test specimen is
Q.16
For maximum power, the velocity of the belt will be
Q.17
When a bolt is subjected to an external load, the stress induced in the bolt will be
Q.18
The form factor of a helical gear __________ with the increase in the helix angle.
Q.19
A metal pipe of 1 m diameter contains a fluid having a pressure of 1 N/mm². If the permissible tensile stress in the metal is 20 N/mm², then the thickness of the metal required for making the pipe will be
Q.20
A screw is specified by its
Q.21
The ratio of pitch circle diameter in millimeters to the number of teeth, is called
Q.22
In helical gears, the distance between similar faces of adjacent teeth along a helix on the pitch cylinders normal to the teeth, is called
Q.23
In helical gears, the distance parallel to the axis, between similar faces of adjacent teeth, is called
Q.24
The centrifugal tension in belts
Q.25
For high speed engines, the cam follower should move with
Q.26
For low and moderate speed engines, the cam follower should move with
Q.27
According to Indian standards, the diameter of rivet hole is made larger than the basic size of rivet by
Q.28
Taper on the cotter and slot is provided
Q.29
The washer is generally specified by its
Q.30
In case of pressure vessels having closed ends, the fluid pressure induces
Q.31
A saddle key __________ power through frictional resistance only.
Q.32
The endurance limit of a material with finished surface in comparison to rough surface is
Q.33
A locking device in which the bottom cylindrical portion is recessed to receive the tip of the locking set screw, is called
Q.34
A screw will be self locking, if
Q.35
Two shafts of the same length and material are joined in series. If the ratio of their diameters is 2, then the ratio of their angles of twist will be
Q.36
In oilness bearings
Q.37
The relation between the pitch of the chain (p) and pitch circle diameter of the sprocket (D) is given by (where T = Number of teeth on the sprocket)
Q.38
In standard taper roller bearings, the angle of taper of outer raceway is
Q.39
In case of pressure vessels having open ends, the fluid pressure induces
Q.40
I.S. specifies following total number of grades of tolerances
Q.41
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)
Q.42
The dedendum circle diameter is equal to (where φ = Pressure angle)
Q.43
The velocity factor for precision metallic gears cut with high accuracy and operating at velocities up to 20 m/s is equal to
Q.44
The function of cutting oil when threading a pipe is to
Q.45
The dedendum is the radial distance from the
Q.46
According to Indian standard specifications, a Grey cast iron designated by 'FG 200' means that the
Q.47
The designation M 33 × 2 of a bolt means
Q.48
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
Q.49
In second type of levers,
Q.50
If threads on a bolt are left hand, threads on nut will be
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