Delmars Unit 17 Resistive-Inductive Series Circuits

In a series circuit, the total _____ is equal to the sum of the individual resistors. voltage current amperage resistance

resistance

Power factor (PF) is the ratio of the _____ power to the _____ power. reactive; apparent apparent; true true; apparent apparent; reactive

true; apparent

A series RL circuit contains two resistors and two inductors. The resistors are 43 Ω and 54 Ω. The inductors have inductive reactances of 70 Ω and 40 Ω. The total impedance is _____. 67.20 Ω 146.66 Ω 84.94 Ω 52.15 Ω

146.66 Ω

In a series RL circuit, ET = 120 V, R = 30 Ω, and XL = 40 Ω. What is the apparent power? 17.92 VA 288 VA 172.8 VA 230.4 VA

288 VA

A series RL circuit has a resistance of 270 Ω and an inductive reactance of 155 Ω. How many degrees is angle theta (∠θ)? 5.03° 29.86° 4.97° 10.14°

29.86°

A series RL circuit contains two resistors and two inductors. The resistors are 33 Ω and 47 Ω. The inductors have inductive reactances of 60 Ω and 30 Ω. The applied voltage is 120 V. What is the voltage drop on the 33 Ω resistor? 46.84 V 32.89 V 60 V 55 V

32.89 V

You connect a clamp-on ammeter and a voltmeter to a series RL circuit powered by a 60-Hz circuit. The voltage reads 120 V and the current is 0.715 A. The resistor is 150 Ω. What is the true power? 167.83 W 76.68 W 65.8 W 86 W

76.68 W

In a series RL circuit, ET = 120 V, R = 40 Ω, and XL = 30 Ω. What is ER? 88.57 V 96 V 72 V 151.43 V

96 V

In a series RL circuit, ET = 120 V, R = 500 Ω, and XL = 500 Ω. What is the true power? 20.36 W 14.4 W 17.2 W 8.8 W

14.4 W

In a series RL circuit ET = 120 V, R = 150 Ω, and XL = 270 Ω. What is the reactive power? 36.62 VARs 42.64 VARs 53.39 VARs 40.75 VARs

40.75 VARs

In a series RL circuit, ET = 120 V, R = 40 Ω, and XL = 30 Ω. How much is EL? 78.57 V 72 V 91.43 V 86 V

72 V

A series RL circuit has two resistors and two inductors. The resistors dissipate 7 W and 12 W. The inductive powers are 15 VARs and 8 VARs. The applied voltage is 240 V. How much is the circuit current? 8.045 A 22.63 A 19.83 A 10.43 A

8.045 A

A series RL circuit contains two resistors. The resistors are 33 Ω and 47 Ω. When calculating the circuit values, the total resistance used is _____. 56 Ω 60 Ω 68 Ω 80 Ω

80 Ω

Of the different power values in an RL circuit, which one is known as apparent power? VA VARs W

VA

Of the different power values in an RL circuit, which one is known as wattless power? W VARs VA

VARs

Dividing a circuit's total applied voltage by the total impedance results in the total _____. VA current power VARs

current

In a series RL circuit, the angle between the voltage and current is called angle theta (∠θ). The cosine of the angle is equal to the _____. volt-amperes VARs power factor watts

power factor

A series RL circuit contains two resistors and two inductors. The resistors are 27 Ω and 47 Ω. The inductors have inductive reactances of 50 Ω and 40 Ω. The applied voltage is 120 V. What is the voltage drop on the inductor that has 40 Ω of reactance? 28.41 V 41.2 V 51.5 V 67.81 V

41.2 V

A series RL circuit contains two resistors and two inductors. The resistors are 33 Ω and 47 Ω. The inductors have inductive reactances of 60 Ω and 30 Ω. Angle theta is _____. 48.37° 72.55° 63.97° 52.27°

48.37°

A series RL circuit contains two resistors. The resistors are 60 Ω and 30 Ω. When calculating the circuit values, the total resistance used is _____. 60 Ω 80 Ω 30 Ω 90 Ω

90 Ω