This online test in Mechanical Engineering for the ALL INDIA BARC assesses knowledge on materials and processes like grinding, reaming, and milling. It evaluates understanding of technical specifications, tolerances, and mechanical tool operations, crucial for professionals in the field.
2500 + 2000 Q
2000 + 2000 Q
2000 + 2500 Q
2500 + 2500 Q
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Only the thermal efficiency
Only the Specific power output
Both thermal effiecincy and specific power output
Any one of the above
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1000
2000
3000
4000
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30
50
60
20
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Euler number
Weber number
Froude number
Mach number
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Infilteration
Impregnation
Plating
Sintering
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0.7
0.6
0.2
0.3
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Schottky defect
Frenkel defect
Edge dislocation
Miller defect
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Types of wheel bond fracture
Types of wheel grain fracture
Sticking of small particle on grinding wheel
None of the above
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35
45
50
55
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Normal
Poisson
Erlang
Beta
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4
3
5
2
Moulding
Laminating
Casting
Calendering
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V-threads
Whithworth threads
Buttress threads
ACME threads
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120
187
125
70
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1.25
1.8
1.7
1.9
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Higher than surface of liquid
Same as the surface of liquid
Lower than the surface of liquid
Unpredictable
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Specific heat of molecules reduced to zero
Kinectic energy of molecules reduced to zero
Volume of gas reduce to zero
Pressure of gas reduced to zero
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250 K
300 K
350 K
400 K
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0.06
0.03
0.09
0.01
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Stress developed in the rod is E α ΔT and strain developed in the rod is α ΔT
Both stress and strain developed in the rod are zero
Stress developed in the rod is zero and strain developed in the rod is α ΔT
Stress developed in the rod is E α ΔT and strain developed in the rod is zero
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5
8
9
4
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Fracture in room temperature below their recrystallization temperature
Brittelness in room temperature below their recrystallization temperature
Loss of ductility above recrystallization temperature
Decrease of brittleness in room temperature
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Higher thermal conductivity material should be used for inner layer and low thermal conductivity material should be used for outer layer
Higher thermal conductivity material should be used for outer layer and low thermal conductivity material should be used for inner layer
Selection of material for any layer is independent on thermal conductivity
Can't judge due to insufficient data
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The limit of the function may not exist at the point
The function must be derivable at the point
The limit of the function at the point tends to infinity
The limit must exist at the point and the value of limit should be same as the value of the
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3Ï€d3/64
7Ï€d3/64
15Ï€d3/64
3Ï€d3/8
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Grinding
Drilling
Planing
Turnig
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Extra hardness is imparted to the workpiece due to coolant used
Extra hardness is imparted to the workpiece due to coolant used
Extra hardness is imparted to the workpiece due to severe rate of strain
Vibration is induced in the machine tool
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Resinoid bond
Rubber bond
Shellac bond
Silicate bond
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7.5 π m/s
15Ï€ m/s
45Ï€ m/s
450Ï€ m/s
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Mild steel, Copper, Cast Iron, Al
Cast iron, Al, Mild steel, Copper
Copper, Cast iron, Mild steel, Al
Al, Cast iron, Copper, Mild steel
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200 MPa
100 MPa
150 MPa
90 Mpa
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Ï€2 E I/L2
2Ï€2 E I/L2
3Ï€2 E I/L2
4Ï€2 E I/L2
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Silicon carbide
Sodium silicate
Boron carbide
Aluminium oxide
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0.66 bar
0.44 bar
0.1975 bar
0.81 bar
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0 Kpa
31 Kpa
18 Kpa
40 Kpa
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1
2
3
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Remains same
Decreases by a factor of 1.414
Rise by a factor of 1.414
Increase by a factor of 4
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6
9
14
24
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Reversible Adiabatic Process
Reversible Isothermal Process
Reversible Isochoric Process
Reversible Isoboric Process
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G is located below B
G located above B
G and B in Coincident
Independent of the location of G and B
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22 m/s
10 m/s
21 m/s
11 m/s
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Compression moulding
Extrusion with mandrel
Injection moulding
blow moulding
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High fluidity
High melt temperature
Wide range of solidification temperature
Low coefficient of thermal expansion
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A positive slope
A negative slope
Zero slope
Asymptote
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0.65
0.3
0.4
0.8
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Ultrasonic Probe
Vernier calipers
Coordinate measuring machine
Laser interferometer
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100
150
200
300
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