Concept:
Robotic actuators determine the load handling capacity of robots. Hydraulic systems are known for high force generation.
Step 1: Analyze Assertion (A).
Hydraulic robots:
• Use pressurized fluid for actuation
• Can generate very large forces
• Are used in heavy-duty applications (e.g., construction, forging)
Thus Assertion (A) is correct.
Step 2: Analyze Reason (R).
Hydraulic systems:
• Deliver high power output for small size
• Have high power-to-weight ratio
Thus Reason (R) is correct.
Step 3: Logical connection.
Because hydraulic systems provide high power in compact size:
• They can handle heavy loads efficiently
Thus Reason explains Assertion.
Final Answer:
\[
\boxed{\text{Both (A) and (R) are correct and (R) explains (A)}}
\]