Question

From the below given statements, which options are true :

(i) When the machine is at rest, the loose dog is in action

(ii) When the pressure on the rigid dog leaves the tooth and the loose dog catches the next tooth of the escapement wheel 

(iii) When the character key is pressed, rigid dog is in action.

(iv) Carriage moves by one degree when loose dog leaves the tooth of the escapement wheel 

• A. Only (i), (ii) and (iii)
• B. Only (ii), (iii) and (iv)
• C. Only (iv), (i) and (ii)
• D. All of the above

Answer 1

Answer:

B. Only (ii), (iii) and (iv)

• When the machine is at rest, the loose dog is not in action.

• It only engages when the rigid dog releases the escapement wheel tooth.

• At rest, both dogs are disengaged.