Question 3 Not yet answered Points out of 10.00 P Flag question A building has a...
Question 4 Not yet answered Points out of 10.00 P Flag question A commercial building has the following electrical design: Lighting System (Demand Factor = 0.75): Indoor lighting = 2.5kW 120V single-phase; Outdoor lighting = 3kW 120V single-phase Heating System (Demand Factor = 0.60): Electric Furnance - 17,000 btuh 240V single-phase • Convenience Power (Demand Factor = 0.35): 50 duplex outlets rated at 1.5A 120V single phase • Include 20% spare circuits for future expansion • The system has a...
Not yet answered Points out of 10.00 P Has question A commercial building in downtown Portland, OR has a three-phase, 480 volt, 1200 ampere service. What is the required transformer size needed for this building? Make sure to show your work FT: BIOWEGO Maximum size for news SOOMB mamamatachments
Question 2 Not yet answered Points out of 10.00 P Flag question A transformer has an incoming service of 7,200 volts. If the primary coil has 75 turns and the secondary coil has 15 turns, what is the outgoing voltage from this transformer? Also, please state if this is a step-up or step-down transformer. FT: BE
P Flag question Question 12 Not yet answered Points out of 2.00 A building has a three-phase, 277 volt service. If the total working power is 364kW with a power factor of 0.95, what is the total current? Select one: O a. 720kW b. 800A O c. 384 kW O d. 1385A e. None of these
Not yet answered P Flag question Question 3 Marked out of 15.00 A 240 V source energizes the parallel combination of a purely resistive 6 kW heater and an induction motor that draws 7 kVA at 0.8 lagging power factor. The overall load power factor is: Select one or more: a. pf = 0.94 (Leading) b. pf = 19.99 c. pf = 0.94 (lagging) d. pf = 0.34 (Lagging)
Question 19 Not yet answered Points out of 7.00 P Flag question A cylindrical conductor of radius R = 9 cm has a non-uniform current density J = 2 r12 in units of A/m2. . (a) Calculate the magnetic field at distance r = 8 cm from the center of the conductor. Select one: O a. 9720.00 T ob. 3240.00 T O c. 6826.67 T Next page LION 20 Not yet answered Points out of 7.00 Flag question A cylindrical...
Question 19 Not yet answered Points out of 7.00 p Flag question A hollow cylindrical conductor of inner radius a = 9 cm, and outer radius b = 22.5 has a non- uniform current density J = r2 in units of A/m². a . . (a) Calculate the magnetic field at distance r = 13.5 cm from the center of the conductor. Select one: • a. 501.03 E-ZT . b. 219.45 E-ZT . c. 13640.60 E-7 T Question 20 Not...
Question 3 Not yet answered Marked out of 10.00 P Flag question You are given that, for the (3, 3)-matrix A below, det(A) A = a r [x b s y c t z Then det ((1-5. A)*)* . (4-472) = Save Progr ss Previous page Next page Jump to... Answer Entry Help
Question 17 Not yet answered Points out of 2.00 P Flag question Backup power in the form of emergency power supply or batter backup is needed for a fire alarm system Select one True False Question 18 Not yet answered Points out of 2.00 P Flag question "T-8" lamp designation tell us that the lamp is tubular shaped and 1" in diameter. Select one: True False
Question 7 Not yet answered Points out of 3.00 P Flag question ESAL an acronym for Equivalent Single Axle Load Select one: True False Question 8 Not yet answered Points out of 3.00 p Flag question A pycnometer measures grain size. Select one: True False