Pick out the wrong statement?
Pick out the wrong statement about the machinability of metals. Machinability of a metal ?
Increasing the carbon content of steel__________?
The ‘transition temperature’ for ductile to brittle behavior of steel increases with increase in the __________ content in steel?
Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is__________?
Out of the following, the most malleable material is__________?
Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal__________?
While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen flame is about __________ °C ?
Oxyacetylene reducing flame is used while carrying out welding on__________?
Adhesives__________?
Name the safety device used to protect the boiler, when the water level falls below a minimum level ?
__________ rubber is generally used for making ‘O’ rings used for vacuum sealings?
A fluid is termed as the Newtonian fluid, when the shear stress is __________ the velocity gradient ?
Earing is a defect found in steels after the following metal working operation ?
Routing in production, planning & control is concerned with the__________?
Steel & cast iron pipes are produced by __________ casting ?
Magnesium is present in__________?
All the atoms of the world comprise of electrons, proton & neutron except that of __________ atom in which neutron is absent ?
Highest cutting speed is achieved by the __________ tool material ?
Which of the following materials has the poorest electrical conductivity ?
For an ideal gas, Cp – Cv is__________?
Viscoelastic behaviour is observed in __________ materials?
Load cells used for the measurement of weight has__________?
The order of a chemical reaction__________?
With increase in temperature, the electrical conductivity of a __________ decreases ?
Which of the following if present in iron ore, enhances its value ?
Out of the following the refractive index is the highest for__________?
In a good rimming steel__________?
Volumetric composition of flue gas analysed with the Orsat apparatus is : CO2 = 12%, O2 = 8%, CO = nil, N2 = 80%. This flue gas composition indicates that__________?
__________ furnace is generally used in the non-ferrous foundries ?
The amount of different substances produced, when the same quantity of electricity is passed through different solutions are proportional to their__________?
Most of the phosphorous present in the blast furnace burden enters into__________?
Density in the solid state is slightly less than that in its liquid state, in case of__________?
Starting friction is low in case of the __________ lubrication?
Large scale fire on fuel gas line is normally extinguished by__________?
Which of the following metals is not subjected to electrolytic refining/purification ?
Strain hardening effect in a metal subjected to cold working is due to the __________ mechanism?
Temperature attained in soldering of metals is about __________ °C?
Which of the following are considered applications of ultrasonic testing ?
Most important property of steels for use in automobile bodies is the__________?
Preheating before welding is done to__________?
The product of a commercial direct reduction process is__________?
A 2 kg object weighs 1.8 kgf on a spring balance. The value of ‘g’ at that location in m/sec2 is__________?
When the wet steam is throttled but still remains wet at the exit of the throttle valve, then its temperature & dryness fraction respectively__________?
Which of the following performance characteristics of a S.I engine is not affected by the front end volatility of the petrol used ?
Consideration of the creep is the most important in case of the__________?
Fine grained steels have__________?
If Reynolds number is greater than 1, then the__________?
Normalising of an object does not__________?
As per international norms, the maximum permissible value of noise level in the industrial environment is __________ decibels as measured at a distance of 1.5 meters from the source of noise?
The delivery pressure of boiler feed water pump compared to the boiler steam pressure is__________?

Pick out the wrong statement ?

A. A ferromagnetic material becomes paramagnetic above the ‘Curie temperature’
B. Permanent magnets are made of hard materials, whereas electromagnets require soft magnetic
materials
C. Soft magnetic materials (e.g., pure iron) have higher permeability and low hysterisis loss and
coercive forces
D. Tungsten steel and alnico are not hard magnetic materials

Correct Answer: Tungsten steel and alnico are not hard magnetic materials ✔

Last Updated: February 10, 2019