Question

One horse power is equal to:

• A. 100 meter-kilogram per second
• B. 76 meter-kilogram per hour
• C. 76 meter-kilogram per second
• D. 100 kilowatt per second

Hint:

Remember the key power conversions: - 1 Metric HP \(\approx\) 75 kgf-m/s \(\approx\) 735.5 W - 1 Imperial HP \(\approx\) 550 ft-lbf/s \(\approx\) 746 W The value of 76 kgf-m/s is a common approximation used in practice.

Answer 1

The Correct Option is C

Step 1: Clarify horsepower (HP). HP measures the rate of work. The metric definition is pertinent.
Step 2: Specify metric horsepower. One metric HP is the power needed to elevate 75 kg against gravity by 1 meter in 1 second. \[ 1 \text{ metric HP} = 75 \text{ kgf} \cdot \text{m/s} \] This is roughly 735.5 Watts.
Step 3: Evaluate the options. "Meter-kilogram per second" matches kgf-m/s. 76 m-kg/s is a common engineering approximation for metric HP, close to the imperial HP (approx 76.04 kgf-m/s). 76 m-kg/s is the accepted standard among the choices.