Machine ry: Approximate ly how many acre s are in a re ctangular fie ld me as uring 1094meters by 1.25 mile s? 1 acre = 43, 560 square feet 1 hectare = 2.47 acres 1 acre = 0.4045 HectaresArea of Rectangle = length width 1 mile= 5,280feet 1 foot = 0.3048 meter

Electrical: A variety of incandescent lights are all operating on a single 120-volt electrical circuit in a livestock barn. The circuit includes ten 60-watt lights, eight 100-watt lights , and four 200-watt lights . What is the amperage of the circuit with all of the s e light operating?Total Wattage = Voltage x Amperage

Energy: A 180 horsepower eight-cylinder engine is operating at 4870 feet above sea level. What approximate horsepower can be produced by the engine when the engine’s power is reduced 2.25 percent for each 1000 feet of elevation above sea level?

Structural: Four solid rectangular steel bars each has cross sectional measurements of 1.5 inches by 3 inche s and a combined maximum tensile strength 1,170,000 pounds . What is the maximum tensile strength of each bar in pounds per square inch (ps i)?

Environmental: In order to protect ground water from animal waste contaminants a concrete slab will be poured using forms that have inside dimensions of 34 ft, 9 inches by 23ft,3inches. The forms allow for a concrete slab that is 6 inches deep. What is the approximate quantity of concrete that will be needed to pour this slab? 1 cubic yard = 27 cubic feet 1 gallon = 231 cubic inches 1 cubic-foot = 1728 cubic-inches Volume of rectangular prism = Length xWidth xHeight

Environmental: If a center pivot irrigation system is 500 meters long (has a 500-meter radius ), approximately how many acres can be irrigated under the pivot's boom during 360 degrees of travel? Area of a circle= (π) x (radius)2 π = 3.14 diameter = 2 x radius 1 acre = 43,560 square feet 1 mile = 5,280 feet 1 foot = 0.3048 meter

Machinery: Each cylinder in a six-cylinder tractor engine has a bore (diameter) of 4.62 inches and a piston stroke of 6.1 inches. What is the approximate total displacement of this engine in liters? Area of a cylinder bore = (π) x (radius)2 π = 3.14 radius = (diameter ÷2) Volumetric displacement of a single cylinder = (length of piston stroke) x (the area of the cylinder bore) 1 liter = 61 cubic inches 1 cubic inch = 0.0164 liter

Electrical: A water pump for stock tanks has an electrical motor that ope rate s at 120 volts and uses 20 amps of current. If the motor is 87.5 percent efficient and has a 0.89 power factor, what is the approximate horsepowerof the motor? 1 horsepower = 746 Watts horsepower = (voltage x amperage x power factor x efficiency)/746

Energy: An available electronic thermometer is calibrated in degrees Fahrenheit (ºF). A livestock feed decontamination process indicates that a temperature for of 82degrees Celsius (ºC)is necessary. What is the approximate temperature equivalent in degrees Fahrenheit? ºF = (9/5 ºC) + 32 ºC = 5/9 (ºF -32) Water freezes at 32 ºF Water boils at 212 ºF

Structural: Steel angle iron is sold for $1.79per linear foot, steel rod is sold for 92cents per linear foot, and steel pipe is sold for $2.91per linear foot. If 60feet of angle iron, 20feet of rod, and 63feet of pipe are purchased, and 7% taxes are paid with the purchase, what is the approximate total price for the metal?

Structural: Which of the following quantities of lumber has the greatest number of board-feet? 1 board-foot = 144 cubic inches 1 square foot = 144 square inches

Environmental: If a animal waste storage tank measures 60 feet wide by 33 yards long.Approximately how deep mus t the container be to hold 200,500 gallons of liquid? 1 gallon = 0.133681 cubic feet 1 yard = 3 feet 1 cubic foot = ( 1 foot x 1 foot x 1 foot )

Machine ry: What is the approximate speed, in miles per hour, for a planter that travels 100 meters in 39.5seconds? 5,280 ft = 1 mile 3600 seconds = 1 hour 1 foot = 0.3048 meter

Electrical: Three incandescent light bulbs (100 Watts , 200 Watts , 300 Watts ) are operating properly in a 120 volt electrical circuit. If each bulb operate s at 120 volts, which of the following statements is correct in regard to the operation of the bulbs ? Information: Wattage = Voltage x Amperage Voltage = Amperage x Resistance

Energy: A water pump has a 3.5-inch diameter pulley that must turn at 1000 revolutions per minute (rpm). The shaft of an electric motor rotate s at 1725 rpm and powers the belt that turns the pump's pulley. What is the approximate diameter of the pulley needed on the motor shaft to turn the pump at 1000 rpms? Pulley Size Formula: (Diameter of Pulley 1 x Speed of Pulley 1) = (Diameter of Pulley 2 xSp eed of Pulley 2)

Structural: A rectangular wooden box is used to ship livestock mineral blocks. Each mineral block weights 42.5pounds and measures 10 inches by 10 inches by 14 inches. Only whole blocks are shipped. This wooden box has a maximum carrying capacity of 2,050 pounds. The boards used in the box are 1.5 inches thick and each side, top, and bottom of the box is two boards thick. The external length and width of the box e ach measurements 48 inches. There are 16 mineral blocks on each layer within the box. What is an appropriate me as ure ment for the box's external height? Volume of rectangular prism = Length x Width x Height

Environmental: Water flows through 109fe et of horizontal pipe line that includes four 90 degree elbows . The water flow rate is 6.25 gallons per minute where the water exits the 109-foot pipe line. The pre s sure loss through the pipeline is equivalent to 6.4vertical feet of head (pressure) loss per 100 feet of horizontal run. The he ad loss through each elbow is equivalent to that of 4.85 feet of additional horizontal le ngth. Approximately, what is the vertical head (pressure) loss for this horizontal pipe line ?

Machine ry: A hydraulic cylinder that operates the arm of a skid steer loader has a bore diameter of 3 inches and a stroke of 36 inches. The tractor’s hydraulic system produces a maximum pressure of 2,900 pounds per square inch. Approximately, what is the maximum force the cylinder can exert on the lift arm? Area of a cylinder bore = (π) x (radius)2 π = 3.14 Force = Pressure x Area radius = (diameter ÷2)

Electrical: The monthly charge to operate an electric pump is 12.75 cents per kilowatt hour (kwh) for the first 1000 hours and 13.9cents for each kwh greater than 1000 hours . If the pump uses 6.75kilowatts per hour and it operates 22 days each month for 12 hours each day, what is the approximate monthly kwh charge to operate the pump?Information: 1 kilowatt = 1000 Watts 100 cents = $1.00

Electrical: An old electrical motor has 'burned' out and must be replaced. The old motor operated an average of 10.5 hours each day, 27 days each month, and its average annual electrical bill was $11,895. The replacement cost for a motor (identified as A) that is identical to the old motor sells for $789 dollars and the installation charge is $276. An energy efficient motor (identified as B) sells for $1,092 and the installation charge is $314. Motor B will have an ave rage cost of $3.39 per hour to operate . Approximately how many months must motor B operate to make up (payback) the higher cost to purchase and install an energy efficient motor rather than motor A? 1 year = 12 months Motor Burnout Payback Period= ( (total cost for high efficient equipment B) -(total cost for identical equipmentA) ) / (average saving in energy cost per month)

Structural: A round concrete column (cylinder) is fabricated using 1.5cubic yards of concrete. If the concrete column is 15 feet 6 inches in height, what is the approximate diameter of the column? 1 cubic yard = 27 cubic feet 1 cubic foot = 1728 cubic inches 1 foot = 12 inches Volume of cylinder = pi× (cylinder radius)2× cylinder height pi= 3.14 diameter = (2 × radius)

Environmental: When a large quantity of manure was initially stored on a concrete slab it was 27% solids and 73% moisture by weight. In the spring the unprotected manure moisture content increased to 90% due to melting snow. The weep walls around the manure storage slab allowed 19% of the manure 's moisture (19% of 90%) to be drained off prior to a field application. What approximate %s of solids remain at the time of application? 1.00 = 100%

Machinery: Refer to the information in Question 24 above. Assume a manure spreader will is used for a field application of the manure (solids and liquids ) described in Question 24. The manure spreader will hold a maximum of 4800 gallons of the manure and the manure (liquid and solids ) will have an average weight of 8.43 pounds per gallon. Approximately how many pounds of solids are applied with each of the spreader's full loads?