Sansera Engineering
Siemens Gamesa Renewable Power Private Limited Interview Questions and Answers
Q1. Difference between fiest angle projection and third angle projection.
First angle projection is commonly used in Europe and Asia, while third angle projection is commonly used in North America.
First angle projection places the object in the first quadrant, with the plane of projection between the observer and the object.
Third angle projection places the object in the third quadrant, with the plane of projection behind the object and the observer.
In first angle projection, the top view is placed above the front view, while in third angle project...read more
Q2. How many axis in CNC machine.
Most CNC machines have 3 or 5 axes, but some advanced machines can have up to 9 axes.
Most common CNC machines have 3 axes: X, Y, and Z.
Some CNC machines have 5 axes: X, Y, Z, A, and B.
Advanced CNC machines can have up to 9 axes, including rotational axes for more complex operations.
The number of axes in a CNC machine determines the complexity of the operations it can perform.
Q3. Define 2 stroke and 4 stroke engine.
2 stroke engine completes the power cycle in 2 strokes of the piston, while 4 stroke engine completes it in 4 strokes.
2 stroke engine has intake, compression, power, and exhaust in 2 strokes
4 stroke engine has intake, compression, power, and exhaust in 4 strokes
2 stroke engines are simpler and lighter but less fuel efficient
Examples of 2 stroke engines: chainsaws, mopeds, dirt bikes
Examples of 4 stroke engines: cars, motorcycles, trucks
Q4. Define measuring gauge and it's types
Measuring gauge is a tool used to measure dimensions accurately. Types include calipers, micrometers, and height gauges.
Measuring gauge is a precision tool used to measure dimensions accurately.
Types of measuring gauges include calipers, micrometers, height gauges, etc.
Calipers are used for measuring the distance between two opposite sides of an object.
Micrometers are used for measuring very small distances or thicknesses.
Height gauges are used for measuring the height of obj...read more
Q5. Least count of digital vernier calliper.
The least count of a digital vernier caliper is the smallest measurement that can be read on the scale.
The least count of a digital vernier caliper is typically 0.01 mm or 0.0005 inches.
It is determined by the number of divisions on the main scale and the number of divisions on the vernier scale.
For example, if the main scale has 10 divisions and the vernier scale has 9 divisions, the least count would be 0.1 mm / 10 = 0.01 mm.
Q6. Full form of CNC machine.
Computer Numerical Control machine is a manufacturing process that uses pre-programmed computer software to control the movement of tools and machinery.
CNC stands for Computer Numerical Control
CNC machines are used in manufacturing processes to automate tasks such as cutting, drilling, and milling
Examples of CNC machines include CNC routers, CNC mills, and CNC lathes
Q7. Define G and M code.
G and M codes are programming languages used in CNC machines to control various functions and operations.
G codes are used to control the movement and positioning of the tool or workpiece on a CNC machine.
M codes are used to activate or deactivate specific machine functions like coolant flow or spindle rotation.
Example: G01 is a code for linear interpolation, while M03 is a code for spindle start in a CNC program.
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