General Knowledge MCQs
Topic Notes: General Knowledge
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
1
What is a 'Fastener'?
Answer:
A hardware device that mechanically joins or affixes two or more objects together
A fastener is a hardware device that mechanically joins or affixes two or more objects together. Examples include bolts, screws, and nails.
2
What is 'Dynamics'?
Answer:
Study of motion and the forces that cause it
Dynamics is a branch of applied mathematics (specifically classical mechanics) concerned with the study of forces and torques and their effect on motion.
3
What is 'Kinematics'?
Answer:
Study of motion without considering the forces that cause it
Kinematics describes the motion of points, bodies (objects), and systems of bodies (groups of objects) without considering the forces that cause them to move.
4
What is a 'Coupling'?
Answer:
A device used to connect two shafts together at their ends for the purpose of transmitting power
A coupling is a device used to connect two shafts together at their ends for the purpose of transmitting power.
5
What is 'Pneumatics'?
Answer:
Use of pressurized gas/air to transmit power
Pneumatics is a branch of engineering that makes use of gas or pressurized air.
6
What is 'Hydraulics'?
Answer:
Use of pressurized liquid to transmit power
Hydraulics is a technology and applied science using engineering, chemistry, and other sciences involving the mechanical properties and use of liquids.
7
What is a 'Pump'?
Answer:
A device to move fluids (liquids or gases) by mechanical action
A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action.
8
What is a 'Compressor'?
Answer:
A device that increases the pressure of a gas by reducing its volume
A gas compressor is a mechanical device that increases the pressure of a gas by reducing its volume.
9
What is a 'Turbine'?
Answer:
A rotary mechanical device that extracts energy from a fluid flow and converts it into useful work
A turbine is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work.
10
What is 'Radiation' in heat transfer?
Answer:
Heat transfer via electromagnetic waves
Thermal radiation is electromagnetic radiation generated by the thermal motion of particles in matter. It does not require a medium.