7. A TV draws a current of 1.75 A when connected to a 120 V household...
PartA A refrigerator draws 3.9 A of current while operating on a 120 V power line. If the refrigerator runs 40% of the time and electric power costs $0.12 per kWh, how much does it cost to run this refrigerator for a 31-day month? Express your answer using two significant figures. cost- Prevlous Answers Request Answe Submit X Incorrect; Try Again; One attempt remaining
A single phase motor draws a current of 30 A from a 240 V, 60 Hz. line. Refer to Problem Description 7.2. A capacitor with a reactance of 31 Ω is then connected in parallel with the motor. A Wattmeter connected to the circuit gives a reading of 5.4 kW. How much reactive power does the capacitor deliver? How much net reactive power remains in the circuit? How much apparent power does the circuit now consume? What is the power...
A 120-V, series-wound motor has a field resistance of 4.0 and an armature resistance of 2.5 . (a) Determine the current drawn by the motor at the very instant it is switched on, i.e., when it has not started to rotate. (b) When it is operating at nominal speed, a back emf of 85.0 V is generated. How much current is drawn in this case? (c) What is the furnished mechanical power? (d) How much power is dissipated?...
A hair dryer draws 12.5 A when plugged into a 120-V line. Assume direct current. (A) What is its resistance? (B) How much charge passes through it in 17 min ?
A hair dryer draws 11.5 A when plugged into a 120-V line. Assume direct current. a) What is its resistance? R=? b) How much charge passes through it in 16 min ? Q= ?
Part A A refrigerator draws 3.1 A of current while operating on a 120 V power line. If the refrigerator runs 45 % of the time and electric power costs S0.12 per kw h, how much does it cost to run this refrigerator for a 30-day month? Express your answer using two significant figures. cost- Submit
A motor is connected to a 12-V battery and draws a 2.0 A current. a) How much power is delivered to the motor? b) How much energy is converted if the motor runs for 5 minutes?
A motor attached to a 120 V/60 Hz power line draws an 7.50 A current. Its average energy dissipation is 840 W. Part APart complete What is the power factor? 0.933 Part B complete What is the rms resistor voltage? 112 V Part C What is the motor's resistance? nothing ΩΩ Request Answer Part D How much series capacitance needs to be added to increase the power factor to 1.0? nothing μF
An inductance coil draws 3.7 A dc when connected to a 36 V battery. When connected to a 60-Hz 120 V (rms) source, the current drawn is 2.0 A (rms) Determine the resistance of the coil. Determine the inductance of the coil.
W. The three appliances are connected to a common 120-V household circuit. An electric heater is rated at 2.00 x 10 W, a toaster at 750 W, and an electric grill at 1.25 X 10 (a) How much current does each draw? heater toaster grill (b) If the circuit is protected with a 32.0-A circuit breaker, will the circuit breaker be tripped in this situation? Yes Ο Νο Explain your answer.