Question

ST. JOSEPH'S PUBLIC School
Mvs

ANNUAL EXAMINATION 22 22
Class Sed
F.M.:80
पूर्वी
दिसलालाई समाधान मारमान है।
मान​

Answer 1

Answer:

In 1698 Thomas Savery patented a pump with hand-operated valves to raise water from mines by suction produced by condensing steam. In about 1712 another Englishman, Thomas Newcomen, developed a more efficient steam engine with a piston separating the condensing steam from the water.