Which of the following is categorised as the plastic welding ?
RADAR is
L.D. converters are generally lined with
Mho's scale of hardness, which consists ofstandard minerals is used for the measurement of __________ hardness.
The hydraulic radius of a circular pipe of diameter 'd' flowing full is
The weight of a body at the centre of the earth is
Filler material used in welding having the lowest melting point out of the following is
Specific heat of an ideal gas depends upon its
The capacity of a material to absorb energy depends upon both its strength & stiffness. The term 'stiffness' of a material is the opposite of its
Scab is a defect developed during __________ of metals.
Electrode potential is not concerned with the measurment of
When metals are heated to high temperature, their __________ increases in general.
Pick out the wrong conversion of absolute & kinematic viscosities.
In spite of large heat transfer co-efficients in boiling liquids, fins are used advantageously, where the entire surface is exposed to __________ boiling.
In the floatation process, pine oil is used as the
When the weight of a ball inside the ball mill is just balanced by the centrifugal force,
Out of the following substances, one ton of __________ will store the maximum heat for a rise of 30°C in temperature.
__________ method of depreciation calculation ensures that the interest is charged on the cost of machine asset every year on the book value, but the rate of depreciation remains constant every year.
Nitriding of steel is a process for
Which of the following is a weak acid ?
Pig iron is a product of
Hoope's cell is predominantly used for the electrolytic refining of
For the same heat input & compression ratio, efficiency of Otto cycle is higher than that of diesel cycle, because in Otto cycle.
The single most imortant requirement for a turbine blade material is
Which of the following has the highest density and the lowest melting point ?
In case of compression of one kg of air, the work done will be the least, when the value of polytropic index 'n' is
Filler metal is not used in the __________ welding.
Pick out the wrong statement about powder metallurgy technique.
__________ column is preferred to be used, when a high liquid hold up is required in a reactor for gas-liquid reaction.
A friction lighter is normally used for lighting gas welding torch, because of the reason that
With increasing carbon percent in steel beyond 0.8%, its ultimate tensile strength (UTS) and __________ is not affected.
Filler metal is used in __________ welding.
Machine tool bodies are usually made of
Stoneware pipes used for sewers for carrying sewage normally is joined by __________ joint.
In which of the following reactions, application of vacuum will help ?
Inspection of surface and sub-surface cracks in non-magnetic alloys is done by __________ testing method.
The speed of sound will be maximum in
Main alloying element in Elinvar used in precision instruments, hair springs for watches etc. is
The maximum percentage of chromium that can be added to steel is about
Lead percentage in pure galena is about
Electrolytes conduct electric current by
A __________ type pressure sensing element is commonly used in aneroid barometer.
The heat released by cooling one mole of copper fromK to room temperature (K) is (assume : Cp of copper isJ K-1mole-1)
A floating body oscillates about its __________ when it is displaced slightly.
Tungsten in high speed steel is responsible for its
Acetylene should never be conveyed through __________ pipe, as it forms an unstable compound that dissociates violently at the slightest shock.
Which of the following contains the least percentage of carbon ?
Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is
Which of the following parameters is actually measured during tensile testing of a specimen using Universal testing machine?
Pick out the wrong statement.
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