The maximum capacity of a reciprocating compressor is 300 m3/min.

Reciprocating Compressor:
A reciprocating compressor is a type of positive displacement compressor that uses a piston to compress gas or air. It operates by drawing in gas or air into a cylinder, then compressing it with a piston and discharging it into a storage tank or pipeline.

Maximum Capacity:
The maximum capacity of a reciprocating compressor refers to the maximum amount of gas or air that it can compress and deliver in a given time period. It is typically measured in cubic meters per minute (m3/min) or cubic feet per minute (cfm). The maximum capacity of a compressor depends on various factors such as the size of the cylinder, piston displacement, and operating speed.

Option C: 300 m3/min
The correct answer is option C, which states that the maximum capacity of a reciprocating compressor is 300 m3/min.

Explanation:
A reciprocating compressor with a maximum capacity of 300 m3/min is capable of compressing and delivering up to 300 cubic meters of gas or air per minute. This indicates that it has a high compression capability and can handle larger volumes of gas or air compared to options A (10 m3/min) and B (200 m3/min).

Option D (1000 m3/min) is incorrect because such a high capacity is not commonly found in reciprocating compressors. Compressors with capacities as high as 1000 m3/min are usually rotary screw compressors or centrifugal compressors, which are different types of compressors.

Option C (300 m3/min) is a reasonable and practical maximum capacity for a reciprocating compressor, considering its design and operational limitations. It is a suitable choice for applications that require moderate to high volumes of compressed gas or air, such as industrial processes, pneumatic tools, or gas pipelines.

In conclusion, the correct answer is option C (300 m3/min), which represents the maximum capacity of a reciprocating compressor.