Introduction to Clutches and Its Type

Q. A wire rope is designated as $6\times 19$ standard hoisting. The numbers $6\times 19$ represent

1. diameter in millimeter $\times$ length in meter
2. diameter in centimeter $\times$ length in meter
3. number of strands $\times$ number of wires in each strand
4. numbers of wires in each strand $\times$ number of strands

Q. Axial operation jaw clutches having self-locking tooth profile

1. can be disengaged at any speed
2. can be disengaged only when unloaded
3. can be engaged only when unloaded
4. can work only with load