Electrical Engineering · Question Bank

DC Circuits

37 of 52 questions match · page 2 of 2. Answer in your head first, then check the solution.

#21📜 EE Pre-Board August 2015📘 PowerhouseEasy

A 120-volt battery having an internal resistance of 0.5 Ω is connected through a line resistance of 9.5 Ω to a variable load resistor. What maximum power will the battery deliver to the load resistor?

A36 W

B63 W

C630 W

D360 W

#22📜 EE Pre-Board August 2015📘 PowerhouseEasy

A lead storage battery is rated at 12 volts. If the internal resistance is 0.01 Ω, what is the maximum power that can be delivered to the load?

A1,200 W

B7,200 W

C3,600 W

D1,800 W

#23📜 EE Pre-Board August 2015📘 PowerhouseEasy

Two 100-watt lamps connected in series across a 220-v line draw 1 A. What is the total power consumed?

A200 W

B220 W

C100 W

D50 W

#24📜 EE Pre-Board March 2016📘 PowerhouseEasy

A resistance of 6 ohms is connected in parallel with another resistor R across a 120v supply. The total current drawn from a supply was found to be 40A. What is the value of resistance R.

A1 ohms

B2 ohms

C4 ohms

D6 ohms

#25📜 EE Pre-Board March 2016📘 PowerhouseEasy

Find the maximum power drawn from a 12 V battery if its internal resistance is 0.25 Ω.

A72W

B144W

C576W

D36W

#26📜 EE Pre-Board March 2016📘 PowerhouseEasy

Two 6 ohm resistors are connected in series. When a resistor R is placed in parallel with one of them, the total resistance is 9 ohms. What is the value of R?

A5 ohms

B6 ohms

C7 ohms

D8 ohms

#27📜 EE Pre-Board March 2016📘 PowerhouseEasy

You have 120 volts at the panel and 115 volts at the load. What is the percentage voltage drop?

A5%

B4.35%

C4.17%

D3%

#28📜 EE Pre-Board March 2017📘 PowerhouseEasy

Find the total resistance if 3 Ω is connected in series with the parallel combination of 4 Ω, 5 Ω and 20 Ω.

A4 Ω

B5 Ω

C6 Ω

D7 Ω

#29📜 EE Pre-Board March 2017📘 PowerhouseEasy

What is the total resistance of eleven 33 kΩ resistors connected in parallel?

A33 kΩ

B3 kΩ

C363 kΩ

D11 kΩ

#30📜 EE Pre-Board March 2017📘 PowerhouseEasy

How many 100 kΩ resistors must be connected in parallel to obtain 20 kΩ?

#31📜 EE Pre-Board August 2017📘 PowerhouseEasy

A 120 volt battery having an internal resistance of 0.5 Ω is connected through a line resistance of 9.5 Ω to a variable load resistor. What maximum power will the battery deliver to the load resistor?

A720 W

B1,440 W

C180 W

D360 W

#32📜 EE Pre-Board August 2017📘 PowerhouseEasy

Three resistors of 10 Ω, 15 Ω and 20 Ω are connected in parallel. What is the total resistance?

A45 Ω

B4.62 Ω

C15 Ω

D2.31 Ω

#33📜 EE Pre-Board August 2017📘 PowerhouseEasy

Two 500-watt lamps connected in series across a 220-volt line draw 1 A. What is the total power consumed?

A1,000 W

B220 W

C500 W

D110 W

#34📜 EE Pre-Board August 2017📘 PowerhouseEasy

The voltage applied across a resistor was reduced by 50%. The power consumed by the resistor will be reduced by ________%.

A25

B50

C75

D100

#35📜 EE Pre-Board March 2018📘 PowerhouseEasy

If there are eleven resistors of 33 kΩ each in parallel, what is the total resistance?

A363 kΩ

B3.3 kΩ

C3 kΩ

D16.5 kΩ

#36📜 EE Pre-Board August 2018📘 PowerhouseEasy

Three resistors A, B and C are connected in series to a 120 V supply. If resistor A = 50 ohms and the voltage across resistor B is 40 V when the current is 1/2 A, what is the resistance of resistor C in ohms?

A105

B90

C110

D100

#37📜 EE Pre-Board August 2018📘 PowerhouseEasy

A 36 Ω resistor is connected in parallel with an unknown resistor R. Their combination is then connected in series with a 12 Ω resistor. Find the value of R such that the power drawn by the parallel combination of 36 Ω and R is equal to the power in the 12 Ω resistor.

A6 Ω

B18 Ω

C24 Ω

D48 Ω

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