Q.1
A material having good damping property is likely to have
Q.2
The swift cup test evaluates the following property of a sheet metal.
Q.3
The escape velocity of a body on earth which is independent of its mass is about __________ km/second.
Q.4
In multipass welds, shot peening is done after each pass to
Q.5
Preheating prior to welding is done for the purpose of
Q.6
Which of the following relationships is correct for relating the three elastic constants of an isotropic elastic material (where, E = Young's modulus, G = Modulus of rigidity or shear modulus v = Poisson's ratio)?
Q.7
Annealing ofwhite cast iron produces __________ iron.
Q.8
At absolute zero temperature, for any reaction involving condensed phases
Q.9
Which of the following is resistant to the action of both heat & chemicals?
Q.10
Magnesium addition to cast iron increases its
Q.11
The amount of different substances produced, when the same quantity of electricity is passed through different solutions are proportional to their
Q.12
Shock resisting steels should possess high
Q.13
Which of the following parameters is actually measured during tensile testing of a specimen using Universal testing machine?
Q.14
The product (s) of roasting of a sulphide ore is (are)
Q.15
Which of the following test is used for distinguishing among dry oils, semi-drying oils and non drying oils?
Q.16
Dephosphorisation of molten pig iron is favoured by
Q.17
Commonly used flux for brazing is
Q.18
Propulsion of rocket follows from the
Q.19
The magnitude of water hammer caused in pipe flow is independent of the
Q.20
__________ rubber is generally used for making 'O' rings used for vacuum sealings.
Q.21
Which of the following pair is correctly matched?
Q.22
For a small scale toy factory, the fixed cost per month is Rs. 5000/-. The variable cost per toy is Rs. 20 and sales price is Rs. 30 per toy. The break even production per month will be __________ toys.
Q.23
Air-petrol ratio in an automotive petrol engine is around
Q.24

Difference at any instant between the value of the controlled variable and the set point is called the

  • deviation
  • derivative time
  • error ratio
  • differential gap
Q.25

The expected efficiency of a single rivetted lap joint is of the order of 50%. If the thickness of the plate is increased four times, then the rivet diameter will have to be increased __________ times.

  • two
  • four
  • six
  • eight
Q.26

Maximum permissible sulphur content in steel is __________ percent.

  • 0.015
  • 0.055
  • 0.505
  • 0.805
Q.27

Nickel and __________ are the alloying element added in steel to increase its toughness.

  • molybdenum
  • chromium
  • vanadium
  • silicon
Q.28

The dimensional formula of bulk modulus of elasticity is same as that of the

  • pressure
  • density
  • force
  • none of these
Q.29

Ferromagnetic material owe their properties to __________ inner sub-shells.

  • completely filled
  • partially filled
  • equally filled
  • vacant
Q.30

Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of

  • lumps
  • pellets
  • briquettes
  • sinter
Q.31

Out of the following, which will fracture most readity, when hit with a hard hammer ?

  • Brass
  • Bronze
  • German silver
  • Cast iron
Q.32

Which of the following equipments is used for liquid dispersion ?

  • Packed column
  • Venturi scrubber
  • Bubble cap plate column
  • Wetted wall column
Q.33

Addition of __________ to steel does not impart hardness.

  • nickel
  • copper
  • chromium
  • silicon
Q.34

Which of the following metals is the most prone to work hardening?

  • Brass
  • Aluminium
  • Copper
  • Lead
Q.35

Corrosion is

  • a physical phenomenon.
  • a chemical phenomenon.
  • same as erosion.
  • an uncontrollable phenomenon.
Q.36

A pycnometer is used for the measurement of

  • flow rate of molten metal.
  • specific gravity of a liquid.
  • composition of alloys.
  • concentration of a solution.
Q.37

Eutectoid composition of carbon steel at room temperature is

  • cementite
  • pearlite
  • martensite
  • ferrite
Q.38

For a spontaneous natural process at constant temperature and pressure, the free energy of the system always

  • increases.
  • decreases.
  • remains constant.
  • increases to a maximum before decreasing.
Q.39

'Amortization' in respect of financial obligation of a company means the

  • liquidation of financial obligations on instalment basis.
  • commitment of financial obligation on priority.
  • liquidation of all the obsolete equipments of the company.
  • modernisation of the plant equipments.
Q.40

Which of the following is not an ore of copper?

  • Cryolite
  • Azurite
  • Chalcopyrite
  • Malachite
Q.41

For infinite parallel planes having emis-sivities ε1 & ε2, the interchange factor for radiation from surface 1 to surface 2 is given by

  • (ε1 + ε2)/ε1.ε2
  • ε1.ε2/(ε1 + ε2 - ε1.ε2)
  • ε1.ε2
  • ε1 + ε2
Q.42

Inertial forces are obtained, when the elastic forces are multiplied by __________ number.

  • Mach
  • Froude
  • Reynolds
  • Euler
Q.43

Working of linear variable differential transducer (LVDT) is based on the principle of variable

  • capacitance
  • resistance
  • mutual inductance
  • none of these
Q.44

Temperature of hot gases flowing in a pipe is measured by a thermocouple inserted in the thermal well. The thermal well made of __________ will facilitate the most accurate measurement of the temperature.

  • copper
  • steel
  • aluminium
  • brass
Q.45

A highly elastic material is deformed least on loading and retains its original form on removal of the load. Which of the following is the most elastic material?

  • Steel
  • Glass
  • Rubber
  • Brass
Q.46

Wavelength of radiation emitted by a body depends on the __________ of its surface.

  • temperature
  • area
  • nature
  • all 'a', 'b' & 'c'
Q.47

Earing is a defect found in steels after the following metal working operation (s).

  • Deep drawing
  • Rolling
  • Extrusion
  • Wire drawing
Q.48

Titanium is added to molten aluminium alloys before casting for the purpose of

  • grain refinement.
  • increasing corrosion resistance.
  • reducing porosity.
  • improving fluidity.
Q.49

__________ metal is used as a bearing liner material.

  • Pewter
  • White
  • Babbit
  • Gun
Q.50

The amount of different substances produced, when the same quantity of electricity is passed through different solutions are proportional to their

  • equivalent weight.
  • (equivalent weight)2.
  • molecular weight.
  • (molecular weight)2.
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