A 208V/120 VAC, 3 phase distribution system:
(a) are used in residential applications more than commercial ones |
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(b) are used in commercial applications more than residential ones |
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(c) both a and b |
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(d) Neither a or b |
A 208V/120 VAC, 3 phase distribution system: (a) are used in residential applications more than commercial...
For a 3 phase power system that operates at 208V in a Y connected configuration and it draws a line current of 20.0 A. The Power Factor is 0.80. Electricity costs $0.18 / kWhr. Answer the following: a. What is the phase voltage of the system? b. What is the phase current for the system? c. How much apparent power is being delivered to the system? d. What is the real power delivered to the system? e. In 8 hours,...
3. The Atlantic Mortgage Insurance Co. markets residential and commercial loans to customers in the maritime region. Recently, the company's board of directors asked whether the company had experienced a difference in the proportion of loan defaults between residential and commercial customers. To prepare an answer to this question, company officials selected a random sample of 200 residential loans and 120 commercial loans. There were 32 defaulted residential loans, and 27 defaulted commercial loans. TOTAL 28 PTS 128 a) Based...
A 3-phase system is more desirable because it uses less number of wires than a single-phase system to transmit the same power capacity Select one O True O False
On a 600V 3-Phase Wye connected four wire system, the nominal voltage to Ground would be: a. 208V O b. 277V OC. 240V d. 3477
Eclipse Motor Company manufactures two types of specialty electric motors, a commercial motor and a residential motor, through two production departments, Assembly and Testing. Presently, the company uses a single plantwide factory overhead rate for allocating factory overhead to the two products. However, management is considering using the multiple production department factory overhead rate method. The following factory overhead was budgeted for Eclipse: Assembly Department $280,000 Testing Department 800,000 Total $1,080,000 Direct machine hours were estimated as follows: Assembly Department...
DC-AC inverters have many commercial and residential applications, including uninterruptible power supply (UPS) units, adjustable speed drives (ASD) for AC motors, and electronic frequency changer circuits. They are also used in solar electrical systems where batteries are charged from solar panels and used as the input DC voltage source. The inverter circuit converts the DC into AC voltage of desired frequency. Most of us are also familiar with HVDC transmission systems, where high voltages are first converted from AC to...
A Single-phase halfwave controlled rectifier is used for a heating system whose rated power is 15kW at 220V. The SCR is connected to a 220 VAC system. 1. Determine the rated equivalent resistance of the heater2. Determine the maximum that the rectifier can provide to the heater3. When the SCR is fired at angle of p/3, determinea. Waveform of the voltages across the load, the SCRb. Waveform of the currents flow through the SCR, drawn by the load and supplied...
A 150 KVA, 2080/208-V, 3 PHASE, delta-wye transformer with the following: RH 450m2 R 4.5m XH 2.20 Load 120 KVA, 90KW (lagging power factor) at rated terminal voltage of 208V Determine a) b) c) The approximate equivalent circuit referred to the low-voltage side The primary voltage The transformer efficiency Please show the following: Circuit with the values given & found Equations used A 150 KVA, 2080/208-V, 3 PHASE, delta-wye transformer with the following: RH 450m2 R 4.5m XH 2.20 Load...
predict the bond angles for H2O2 A)Exactly 120 B)Slightly more than 109.5 C)Slightly less than 120 D)Exactly 109.5 E)Slightly less than 109.5 F)Slightly more than 120 G)Exactly 180
Toxaway Company is a merchandiser that segments its business into two divisions-Commercial and Residential. The company's accounting intern was asked to prepare segmented income statements that the company's divisional managers could use to calculate their break-even points and make decisions. She took the prior month's companywide income statement and prepared the absorption format segmented income statement shown below: Sales Cost of goods sold Gross margin Selling and administrative expenses Net operating income Total Company $ 870,000 571,300 298,700 272,000 5...