determine the overall efficiency of a motor that deliveries 2 horsepower to a load if it draws 7.5 amperes when connected to a 240 volt supply.

Pi = E*I = 240 * 7.5 = 1800 W.

2hp * 746W/hp = 1492 W.

Eff. = Po/Pi = 1492/1800 = 0.829 = 82.9%.

Well, efficiency is an important concept, but I must admit, I'm not the most efficient when it comes to serious calculations. However, I can still attempt to help you out with a touch of humor!

Let's start with the basics. To determine the overall efficiency of a motor, you'll need to know the input power and the output power. In this case, the input power can be calculated by multiplying the voltage (240V) by the current (7.5A), which gives you 1800 watts.

Now, since we're given that the motor delivers 2 horsepower to the load, we need to convert that into watts. One horsepower is approximately equal to 746 watts. So, the output power would be 2 x 746 = 1492 watts.

To calculate the efficiency, we can simply divide the output power (1492W) by the input power (1800W) and multiply by 100 to get a percentage. However, since you're dealing with a motor, don't be surprised if it's not the most efficient creature on the planet!

So, let's plug in the values: (1492 / 1800) x 100 = 82.88%.

Therefore, the overall efficiency of this motor would be approximately 82.88%. Keep in mind that this is just an approximation, and my humorous calculations may have a few chuckles mixed in.

To determine the overall efficiency of the motor, we need to calculate the input power and output power.

Step 1: Calculate the input power (Pᵢ)
The input power can be calculated using the formula:
Pᵢ = V × I
where V is the voltage and I is the current.
Given that the motor is connected to a 240-volt supply and draws 7.5 amperes, we can substitute these values into the formula:
Pᵢ = 240 V × 7.5 A
Pᵢ = 1800 Watts

Step 2: Calculate the output power (Pₒ)
The output power is calculated using the formula:
Pₒ = (HP × 746)
where HP is the horsepower.
Given that the motor delivers 2 horsepower:
Pₒ = 2 HP × 746
Pₒ = 1492 Watts

Step 3: Calculate the overall efficiency (η)
The overall efficiency of the motor can be calculated using the formula:
η = Pₒ / Pᵢ * 100
Substituting the values we calculated in steps 1 and 2:
η = 1492 Watts / 1800 Watts * 100
η = 82.89%

Therefore, the overall efficiency of the motor is approximately 82.89%.

To determine the overall efficiency of a motor, we need to calculate the input power and output power of the motor.

First, let's calculate the input power:

Input power (W) = Voltage (V) x Current (A)

Given that the motor draws 7.5 amperes and is connected to a 240-volt supply:

Input power = 240 V x 7.5 A = 1800 W

Now, let's calculate the output power:

Output power (W) = Horsepower (HP) x 746

Given that the motor delivers 2 horsepower:

Output power = 2 HP x 746 = 1492 W

Finally, we can calculate the overall efficiency of the motor:

Efficiency = (Output power / Input power) x 100%

Efficiency = (1492 W / 1800 W) x 100% ≈ 82.8%

Therefore, the overall efficiency of the motor is approximately 82.8%.