App Logo

No.1 PSC Learning App

1M+ Downloads
How many types of keyboards are in typewriters ?

A1

B4

C2

D3

Answer:

D. 3


Related Questions:

Parts of the rocker mechanism

  1. Loose dog and escapement wheel
  2. Rigid dog and pinion wheel
  3. Loose dog and main spring
    The paper guide is otherwise called ------
    Who invented a "mechanical typographer "in 1852?

    Expansion of 'w.e.f '

    1. With effect for
    2. With effective from
    3. With effect from
    4. With effective for
      Identify the cause of bad alignment ?