A non-reversible machine is also called a self-locking machine

Related MCQs

• 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.
• Vectors method for the resultant force is also called polygon law of forces.
• A redundant frame is also called
• A machine having an efficiency less than 50%, is known as
• A machine having an efficiency greater than 50%, is known as
• The mechanical advantage of a lifting machine is the ratio of
• A weight of 1000 N can be lifted by an effort of 80 N. If the velocity ratio is 20, the machine is
• If the efficiency of a lifting machine is kept constant, its velocity ratio is