IV. Заполните пропуски глаголами: "to pass", "to prevent", "to actuate", "to separate":
1- No current... through an open circuit 2. In order to ... short circuits the armature of motor and its stator are ... by an air gap. 3. In order to ... .fluctuations, starting rheostats applied. 4. A prime mover... the armature of a d. c motor.

1. No current passes through an open circuit. 2. In order to prevent short circuits the armature of motor and its stator are separated by an air gap. 3. In order to prevent fluctuations, starting rheostats applied. 4. A prime mover actuates the armature of a d. c motor.