A DC shunt generator has a speed of 800 rpm when delivering 20 A to the load at the terminal voltage of 220 V. If the same machine is run as a motor it takes a line current of 20 A from 220 V supply. The speed of the machine as a motor will be

• A. 800 rpm
• B. More than 800 rpm
• C. Less than 800 rpm
• D. Both higher or lower than 800 rpm