Some substances generate voltage when they are subjected to mechanical forces or stresses along specific planes. Such subtances are known as

Related MCQs

• Mechanical seals are used
• In a stationary type mechanical seal the sealing ring is generally located
• All mechanical seals have two flat sealing surfaces
• In a turning operation on a horizontal axis lathe, the forces on tool act
• In order to lower the cutting forces and also to decrease the cutting wear, alloying element generally added to steel for free machining is
• The range of voltage (open circuit) in are welding is generally
• Which of the following process needs high voltage for its operation?
• Cutting speeds for some materials are given as
• Specific temperature for the international Prototype metre is
• The riser in a mould should be located in such a way so that