Match the following: List I List II A. Servomotor 1. Error detector B. Amplidyne 2. Transducer C. Potentiometer 3. Actuator D. Flapper valve 4. Power amplifier

• A-3, B-1, C-2, D-4
• A-4, B-3, C-2, D-1
• A-3, B-4, C-1, D-2
• A-3, B-4, C-2, D-1