Question

By using -------the cylinder can be rotated

• A. Feed rollers
• B. Platen knobs
• C. Ratchet wheel
• D. Escapement wheel

Answer 1

Answer:

B. Platen knobs

• By using platen knobs the cylinder can be rotated
• Platen knobs also known as Thumb wheels
• Thumb Wheels are used rotate the cylinder in  either direction and to feed the paper or to  remove it.
• When the line space and carriage return lever fails, we can get the next line of typing by the use of the Thumb Wheel.