The ____ torque wrench is relatively inexpensive and works by beam bending in response to the torque applied.
a. deflecting beam
b. “no-hub”
c. beam-type
d. click-type
c. beam-type
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An uninsulated air compressor is to compress 0.10 kg/s of at from 100 kPa and 20°C to 900 kPa and 330°C. Using your compressor model, determine the power requirement for this pr°Cess for heat transfer rates ranging from -2.0 kW to -10.0 kW.
Given: P1 = 100 kPa; T1 = 20°C; T2 = 330°C; P2 = 900 kPa; m?=0.1 kg/s Air (Take State 1 as the inlet, State 2 as the outlet.) Assume: For a compressor, assume steady-state, steady-flow, single-inlet, single-outlet flow, with ?KE = ?PE = 0 What will be an ideal response?
Estimate the re-aeration constant assuming the mean depth of the river is 1.5 meters and the mean velocity is 0.1 m/s.
The Ganges River, shown in Figure 4.66, has an annual average flow rate of 12,105 m3/s. The average temperature of the Ganges River was reported to be 24.6ºC. The Ganges has become contaminated with raw sewerage and industrial waste so that the dissolved oxygen in the river upstream of sewerage discharges is 4.6 mg/L. Suppose that the raw sewerage that is untreated flows into the Ganges at a rate of 460 m3/s, the temperature is 25ºC, and the dissolved oxygen in the sewerage stream is completely depleted (i.e. DO = 0). How would you develop a plan for improving water quality in the Ganges River? What will be an ideal response?
An online commercial directory service must decide between composing the ads for its clients in-house or paying a production company to compose them. To develop the ads in-house, the company will have to purchase computers, printers, and a database management system at an estimated cost of $42,000. This equipment will have a useful life of 3 years, after which it will be sold for $2000. The employee who creates the ads will be paid $55,000 per year. In addition, each ad will have an average cost of $10. Alternatively, the company can outsource development at a flat fee of $21 per ad. At an interest rate of 10% per year, how many ads must the company sell each year for the options to just break even?
What will be an ideal response?
The function of a thermocouple in a gas valve is to _____
a. ignite the fuel when the gas valve opens b. turn the pilot off when the thermostat is satisfied c. convert heat from the pilot into an electric current d. sense the flame of the main burner