MET230_WK2_Practice

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Problem 2 Six years ago, an 80-kW diesel-electric set cost $160,000. The cost index for this class of equipment six years ago was 187 and is now 194. The plant engineering staff was considering a 120-kW unit of the same general design to power a small isolated plant that would have cost $211,707. Based on the information above the plant engineering staff is considering a 100-kW unit of the same general design to power a small isolated plant. Assume we want to add a pre- compressor, which (when isolated and estimated separately) currently costs $13,000. Determine the total cost of the 100-kW unit.

hydraulic actuator consist of a cylinder or motor that utilizes mechanical process to facilitate hydraulic power True or false

Energy Star Washing Machine Model #: GTW500ASN Style: Top Loader Cubic Feet: 4.5 cubic feet Yearly Energy Usage (from Energy Guide): 210 kWh/y Non-Energy Star Washing Machine Model #: GTW465ASN Style: Top Loader Cubic Feet: 4.5 cubic feet Yearly Energy Usage (from Energy Guide): 175 kWh/yr Picture of Appliance: Website Link to Retail Store Purchase Price: (1) $498.00 Yearly Energy Use (in kWh): 175 kWh/yr Energy Cost per Year (Energy usage in kWh from above x .1111 cents/kWh): (3) Cost Recuperation Estimation 1 Picture of Appliance: Website Link to Retail Store Purchase Price: (2) $478.00 Yearly Energy Use (in kWh): 210 kWh/yr Energy Cost per Year (Energy usage in kWh from above x.1111 cents/kWh): (4) Initial Cost Difference: Energy Star Appliance Price (1) - Non-Energy Star Appliance Price (2) Calculation (Show Your Work): This is the original upfront price difference. In other words, how much more money the Energy-Star Appliance costs. 2. Cost Per Year Difference: Non-Energy Star…

Part II. Longer problem focused on problem solving multiple steps. This problem will be graded based on process, clarity of work, and correct answer and units. a. A spring is stretched, with a force, F = 442 lbf, along the outside of a pipe as shown with a = 53° and ẞ 69° and the coordinates of the force are (15,37,-71 ). How far does the spring stretch if the spring constant is k=67 lb/in? Hint: The force that stretches the spring is the projected force along the pipe F (x, y, z)

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4:58 1 Level 3 New Choose the best answer. How should you check that the spring brakes come on when the air pressure in the system drops below a certain level? Park on a slight incline, drain off air pressure, set the parking brakes, and check for movement. Park on level ground, chock the wheels, release the parking brake when you have enough air pressure, shut the engine off, and repeatedly press and release the brake pedal. Park on level ground, wait for normal air pressure, release the parking brake, move the truck forward slowly, and apply the brakes firmly using the brake pedal. Report a mistake Start fresh with a stable company OPEN ...

FLUID POWER TECHNOLOGY 7) For the hydraulic system of Figure 3, the following data are given: •The pump is adding 4 kW (pump hydraulic power) to the fluid. •Pump flow is 2000 cm3/s. •The pipe has a 25.4 mm inside diameter. •The specific gravity of the oil is 0.9. Determine the pressure available at the inlet to the hydraulic motor (station 2). The pressure at station 1 in the hydraulic tank is 1 atm. The head loss hL due to friction between stations 1 and 2 is 9.144 m of oil. (Hint: Use Bernoulli’s formula)

.Q21 The forces do not cause rotation

Help with physics review problem

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Q1. (20%) A cam drive is required for a mechanism that feeds papers into a printing press. The cam follower must rise outward 1.0 in with constant acceleration in 1.7 s, dwell for 0.8 s, fall 0.5 in with constant acceleration in 0.8 s, dwell for 0.3 s, fall 0.5 in. with constant acceleration in 0.8 s, and then repeat the sequence. Determine the required speed of the cam and graphically plot a follower displacement diagram.

24 Problem: Mathematics in Wind Energy Production Wind power is defined as the use of air flow through wind turbines to provide the mechanical force to generate electricity. Wind power is an alternative to burning fossil fuels, and is renewable and produces no greenhouse gas emissions during operation. Modern horizontal-axis wind turbines often use three blades. Theoretically, the maximum power P (unit: watts) that a three-blade wind turbine can extract from the wind power can be calculated as: Blade 1. %3D (Equation 1) dɔzayd² = d where p is the air density (kg/m'), A is the sweep area of the turbine (m²) and can be calculated from the length of the turbine blades, and v is the wind speed (m/s). C, is the power coefficient that is unique to each turbine type. This coefficient represents the amount of kinetic energy from the wind that is captured by the turbine. From the Betz's limit law we know that the best power conversion possible is Cp,max = 0.59. Part 1 Given the following data:…

What size of receiver tank (gal) for a compressor is required if the pneumatic system is used to drive 5 linear cylinders which collectively consume 12 SCFM for 5 minutes? The compressor pressure switch operates between 90 and 110 psi.

what are the four primary functions of a hydraulic fluid

15. The torque carried by a rotating shaft is determined by the diameter of the shaft, the power being transmitted and the rotational frequency of the shaft. * True False Neither of the statements are correct

Tire manufacturers recommend that you check your tire pressure monthly to avoid unnecessary tire wear and enhance safety. This is best done when the tires are cold meaning; the car has not been driven for at least 2 hours. Since you leave for work before the sun comes up you decide to inflate your tires to the recommended pressure right after you get home from work in the afternoon when the tires are still warm. What would you find if you rechecked your tire pressure after the tires have cooled down? A.Tire pressure has decreased because there is a decrease in kinetic energy of themolecules resulting in more collisions with the inside walls of the tire thusincreasing the pressure inside the tire. B.Tire pressure has increased because there is a decrease in kinetic energy of the molecules resulting in fewer collisions with the inside walls of the tire thus decreasing the pressure inside the tire. C.Tire pressure has increased because there is an increase in kinetic energy of the…

19 Rigidity depends on what 3 factors? Gravity, radius of Gyration and direction of spin. Mass of the rotor, radius of gyration, & speed of spin. Wander, drift and speed of spin. Mass of the rotor, distance to spin axis, & direction of spin. 20. The pilot of this aircraft pulls the control column back to start a climb. She makes no change to the engine power. The aircraft loses speed as it converts potential energy into kinetic energy. The total amount of energy in the aircraft reduces. The aircraft's speed remains the same because the engine power is unchanged. The aircraft loses speed as it converts kinetic energy into gravitational potential energy

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