How do you calculate input power?
Input and output power
- Electrical power is calculated by multiplying voltage (in volts) by current (in amps).
- If a transformer is 100% efficient, then the input power will equal the output power.
- V P is input (primary) voltage.
- I p is input (primary) current.
- V s is output (secondary) voltage.
- I s is output (secondary) current.
Can work output be greater than work input?
Work output can never be greater than work input. Machines allow force to be applied over a greater distance, which means that less force will be needed for the same amount of work. When a machine changes the size of the force, the distance through which the force is exerted must also change.
Which shows the relationship between work input and work output?
Which shows the relationship between work input and work output? input force x input distance > output force x output distance. the distance through which you exert a force increases the amount of force required.
What force causes work output to be less than work input?
friction
What is the SI unit of efficiency?
The term efficiency is a dimensionless measure (sometimes quoted in percent), and strictly heat rate is dimensionless as well, but often written as energy per energy in relevant units. In SI-units it is joule per joule, but often also expressed as joule/kilowatt hour or British thermal units/kWh.
How do machines make our work easier and faster?
Machines make work easier by increasing the amount of force that is applied, increasing the distance over which the force is applied, or changing the direction in which the force is applied. That’s because a machine doesn’t change the amount of work and work equals force times distance.
What makes our work easy?
Because work is defined as force acting on an object in the direction of motion, a machine makes work easier to perform by accomplishing one or more of the following functions, according to Jefferson Lab: transferring a force from one place to another, increasing the distance or speed of a force.
What is effort Force formula?
The effort force at a distance of 2 m from the fulcrum can be calculated as. Fe = (1 kg) (9.81 m/s2) (1 m) / (2 m) = 4.9 N. A lever mechanism where the input effort is higher than than the output load is often characterized as a third-class lever mechanism.
How do you calculate the input power of a motor?
In our example input electrical power of the motor is 0.22 A x 6 V = 1.32 W, output mechanical power is 1000 rpm x 2 x 3.14 x 0.00126 N•m /60 = 0.132 W. Motor torque changes with the speed. At no load you have maximum speed and zero torque. Load adds mechanical resistance.
What is input power of motor?
Input power [W] = Voltage [V] x Current [A] Mechanical output [W] = Rotating speed [rad/s] x Rotative force [Nm] (rad is called radian and Nm Newton meter) Motor efficiency refers to the fraction of mechanical output to input power as a percentage (%).
What is the formula for calculating rpm?
Motor RPM Calculation Examples For a 60 Hz system with four poles, the calculations to determine RPM would be: (Hz x 60 x 2) / number of poles = no-load RPM. (60 x 60 x 2) / 4. 7,200 / 4 = 1,800 RPM.
Is rated power input or output?
In electrical engineering and mechanical engineering, the power rating of equipment is the highest power input allowed to flow through particular equipment. According to the particular discipline, the term “power” may refer to electrical or mechanical power.
What is maximum input power?
Maximum Input Power is defined as: The maximum amount of power (voltage given in Watts) that is able to be transmitted to a single antenna without damage to the antenna port from overloading. Maximum Input Power is a key parameter commonly seen on antenna specifications and datasheets. Power (total)’ or ‘Max.
What is the highest power output?
The potential energy stored in the electrical field (of the resulting cloud-Earth “capacitor”) is the equivalent of 175,000 MJ. Since a joule equals a watt-second, this would be equivalent to 48.61 megawatt-hours of power IF all the energy could be harvested.
What is the power output of Maxima C’s engine?
Performance
| Max Power | 9 |
|---|---|
| Displacement (cc) | 236.2 cc |
| Fuel Tank (Litres) | 40(5.6kg) Ltr |
| Transmission | Manual |
| Gradeability (%) | 15 % |
What affects power output?
The three main factors that influence power output are: wind speed, air density, and blade radius.
What is the power output of 92u235?
The correct option is (c) 58.3 MW.
What is the power output measured in?
Watts
What is the power output of the turbine in kW?
k = 0.000133 A constant to yield power in kilowatts. (Multiplying the above kilowatt answer by 1.340 converts it to horse- power [i.e., 1 kW = 1.340 horsepower]). The rotor swept area, A, is important because the rotor is the part of the turbine that captures the wind energy.
What is the efficiency of a turbine?
Turbine efficiency is the ratio of actual work output of the turbine to the net input energy supplied in the form of fuel.
How do I calculate flow rate?
Q=Vt Q = V t , where V is the volume and t is the elapsed time. The SI unit for flow rate is m3/s, but a number of other units for Q are in common use. For example, the heart of a resting adult pumps blood at a rate of 5.00 liters per minute (L/min).
What is normal flow rate?
Normal flow rate is 1 atmosphere (101.3 kPa) or 14.696 psia at 32 0F (0 0C). Actual flow rate is the actual volume of fluid that passes a given point based on given pressure and temperature of the process.
How do you calculate water flow rate?
To calculate the water flow (in m3/s) multiply the average water velocity by the average cross-section. To express this water flow in litres per second (l/s), multiply the result (in m3/s) by 1000. 0.486 m3/s x 1 000 = 486 l/s.
How do you calculate water flow rate with pressure?
With a radius, for instance, of 0.05 meters, 0.05 ^ 2 = 0.0025. Multiply this answer by the pressure drop across the pipe, measured in pascals. With a pressure drop, for instance, of 80,000 pascals, 0.0025 x 80,000 = 200. Multiply the constant pi by the answer to Step 1: 3.142 x 0.0025 = 0.00785.
Does flow rate increase with pressure?
Pressure is the cause. Flow rate is the effect. Higher pressure causes increased flow rate. If the flow rate increases, it is caused by increased pressure.
Is flow rate directly proportional to pressure?
Flow rate Q is directly proportional to the pressure difference P2−P1, and inversely proportional to the length l of the tube and viscosity η of the fluid. Flow rate increases with r4, the fourth power of the radius.
How many gallons per minute will flow through a 1 inch pipe?
Metric PVC Pipe
| Assume Average Pressure. (20-100PSI) About 12f/s flow velocity | ||
|---|---|---|
| 1″ | 1.00-1.03″ | 37 gpm |
| 1.25″ | 1.25-1.36″ | 62 gpm |
| 1.5″ | 1.50-1.60″ | 81 gpm |
| 2″ | 1.95-2.05″ | 127 gpm |
How many GPM can a 1/4 pipe flow?
Water Flow (GPM/GPH) based on Pipe Size and Inside/Outside Diameters
| Assume Average Pressure (20-100PSI). About 12 f/s flow velocity | ||
|---|---|---|
| 1″ | 1 – 1.03″ | 37 |
| 1-1/4″ | 1.25 – 1.36″ | 62 |
| 1-1/2″ | 1.5 – 1.6″ | 81 |
| 2″ | 1.95 – 2.05″ | 127 |
How many GPM can a 4 Drain handle?
1106.2 Size of Storm Drain Piping
| PIPE SIZE (inches) | CAPACITY (gpm) | |
|---|---|---|
| 2 | 34 | 15 |
| 3 | 87 | 39 |
| 4 | 180 | 81 |
| 5 | 311 | 117 |
Will increasing pipe size increase flow?
The flow of water from your faucet is determined by water pressure. Through any pipe size, higher water pressure will cause greater water flow. The pressure will decrease downstream, however, because of loss of friction and water velocity increase.
Does reducing pipe size increase water pressure?
You have simply traded reduced flow for increased pressure. The same thing would happen in your sprinkler system if you used smaller pipe to increase the pressure. The smaller pipe would restrict the flow of water. The reduced flow would reduce the pressure loss in the pipes, resulting in more pressure.