Manufacturing Engineering Interview Questions and Answers
What is OEE? | Manufacturing Engineering Interview Questions And Answers
OEE means Overall Equipment Effectiveness. This terminology widely used in Total productive maintenance, which is used to calculate the effectiveness of machines in manufacturing. Basically it captures the losses of machines in production and try to improve defects on machines. Higher the OEE, more capable is the machine.
In automobile vehicle, power is transmitted from the gear box to the differential through
- Bevel gears
- Hooke’s joint
- Old ham’s coupling
- Knuckle joint
Leakage of refrigerant from a system is detected by halide torch. Here flame turns
- Bright green
Why Involutes Curve used in Gear? | Manufacturing Engineering Interview Questions And Answers
Involute curve is the path traced by a point on a line as the line rolls without slipping on the circumference of a circle. Involute curve has a contact angle between two gears when the tangents of two gears pass through the contact point without friction.
What is Bearing stress? | Manufacturing Engineering Interview Questions And Answers
The stress which acts on the contact surface area between two members is known as Bearing stress. An example for this is the stress between nut and the washer.
Which is hard material Cast Iron or Mild Steel?
Cast iron. Due to the excess carbon content than mild steel it is harder. The more carbon content, the more hardness will be. But it reduces the weldability due to this hardness. It is brittle too.
What are the materials used for Sliding Wear pad? | Manufacturing Engineering Interview Questions And Answers
Urethane-Coated Base Material Provides Optimum Sliding Surfaces for Maximum Wear Ability
Galvanized Steel for Backing on Head and Side Pads
For crane services, We use Velcro Nylon wearing pad
Compressed air is contained in a cylinder at room temperature. It suddenly starts leaking through a hole. The behaviour of the gas is
- There is no change in its temperature
- It gets cooler
- It becomes hotter
- It may get cooler or become hotter depending on the humidity in the air
- It gets cooler
It is a case of adiabatic expansion. So cooling takes place.
What is the difference between a Shaper machine and a Planner machine? | Manufacturing Engineering Interview Questions And Answers
In Shaper machine tool is having reciprocating motion and work piece is clamped on table which is stationary. It is mostly suitable for light duty operation.In Shaping large cutting force is transferred to tool.
In Planer machine tool is having stationary and work piece is clamped on table which is reciprocating motion. It is mostly suitable for Heavy duty operation. In planner large cutting force is transferred to table.
Discharge of exhaust gases through chimney will be maximum when
- Chimney is very tall
- Outside temperature is much lower than the hot gas temperature
- Height of the chimney is equal to the half the height of the equivalent column of air
- When the temperature of exhaust gases is lowest
Height of the chimney is equal to the half the height of the equivalent column of air
How will you calculate the tonnage of Mechanical Press? | Manufacturing Engineering Interview Questions And Answers
F = S x L x T divided by 1000
F = Force in kilo Newton’s
S = shear stress of material in MPa
L = the total length of peripheries being cut/sheared in mm
T = thickness of material in mm