For a self locking machine, the efficiency must be

Related MCQs

• A non-reversible machine is also called a self-locking machine
• A machine having an efficiency less than 50%, is known as
• A machine having an efficiency greater than 50%, is known as
• If the efficiency of a lifting machine is kept constant, its velocity ratio is
• The efficiency of a lifting machine is the ratio of
• The maximum efficiency of a lifting machine is
• An ideal machine is one whose efficiency is
• A machine which is capable of doing work in the reversed direction, after the effort is re-moved, is called a non-reversible machine.
• A machine which is capable of doing any work in the reversed direction, after the effort is removed, is called a reversible machine.
• A lifting machine lifts a load of 1000N through a distance of 0.2 m by means of an effort of 200N through a distance of 1m. This machine is an ideal one.