If a shaft is rotating N revolutions per minute with an applied torque T kg-m, the horse power being transmitted by the shaft, is

• A. <img src="/_files/images/civil-engineering/strength-of-materials/135-6.162-1.png">
• B. <img src="/_files/images/civil-engineering/strength-of-materials/135-6.162-2.png">
• C. <img src="/_files/images/civil-engineering/strength-of-materials/135-6.162-3.png">
• D. <img src="/_files/images/civil-engineering/strength-of-materials/135-6.162-4.png">
• E. none of these.