List of top Mechanical Engineering Questions

What is the key requirement for an adhesive to properly bond to a surface?
The phenomenon where a metal part tends to partially return to its original shape after the forming tool is removed is known as
In MIG welding process, the commonly used gases for shielding are
The secondary operation which is used to improve the self-lubricating capacity of the sintered part in powder metallurgy is
A low projection on the drag surface of a casting commencing near the gate by erosion of sand due to the high velocity liquid metal in the bottom gating. This defect is known as:
The shrinkage allowance has been provided on the pattern to compensate the shrinkage when:
The commonly used casting process for producing intricate and detailed sculptures is:
Based on Iron-Carbon diagram, when austenite decomposes during cooling process, an eutectoid mixture is formed. The nature of the element is
The extrusion process used to manufacture the short length components like paste tubes, gun shells etc., is
While designing the gating system, the ratio of 1 : 2 : 4 represents:
In casting process, the covering passage is used for feeding the liquid metal into the mould to
Which one of the following metal has maximum value of yield strength?
The area under the linear curve of stress-strain diagram with in the elastic limit is known as
The heat treatment process used to enrich the steel surface by addition of Nitrogen is known as
In a linearly hardening plastic material, the true stress beyond the initial yielding
In order to increase the corrosion resistance of stainless steel, the following element is added
If the material has the tendency to fracture without any appreciable deformation is known as
The refrigerant and absorbent used in Vapour absorption refrigeration system respectively are
An air conditioning system mixes 30% fresh air at 35 $^\circ$C DBT and 50% RH with 70% recirculated air at 35 $^\circ$C DBT and 50% RH. Which of the following statements about "mixed air condition" is true?
The whirl component of turbine blades is zero for the following turbine.
A single stage impulse turbine with a diameter of 1.2 m runs at 3000 rpm. If the blade speed ratio is 0.42, the inlet velocity of steam will be (in $\text{ms}^{-1}$)
In an axial flow compressor, if the air stream is not able to follow the blade contour such phenomena is known as
In an ideal Brayton power cycle operated for the gas turbine plant, if \(T_1\) is the minimum temperature, \(T_3\) is the maximum temperature and pressure ratio is \(r_p\), then the net work ratio is given as
If regenerator is added to a Brayton cycle, the thermal efficiency is improved due to
Generally, in spark ignition engines, the compression ratio cannot be enhanced beyond certain limit because to avoid