If the power of any engine is 1HP, then what does it means ?

Options

A. Engine work for 746N
B. The rate of doing work by the engine is 746 J/s
C. Total work done by the engine is 746J
D. None of the above

Explanation

To understand what it means when the power of an engine is 1 horsepower (HP), we can break it down step by step:

### Step 1: Define Power
Power is defined as the rate at which work is done. The formula for power (P) is given by:
\[ P = \frac{W}{t} \]
where \( W \) is the work done and \( t \) is the time taken.

### Step 2: Understand the Unit of Power
The standard unit of power in the International System of Units (SI) is the watt (W). One watt is defined as one joule per second:
\[ 1 \text{ W} = 1 \frac{\text{J}}{\text{s}} \]

### Step 3: Convert Horsepower to Watts
1 horsepower is a unit of power that is commonly used to measure the output of engines. It is defined as:
\[ 1 \text{ HP} = 746 \text{ W} \]
This means that an engine with a power rating of 1 HP can do 746 joules of work in one second.

### Step 4: Conclusion
Therefore, if an engine has a power of 1 HP, it means that the engine can perform work at a rate of 746 joules per second.

### Final Answer
In summary, if the power of any engine is 1 horsepower (1 HP), it means that the engine can do 746 joules of work in one second.

---