Electricity for The Trades 3rd Edition by – Test Bank (2024)

Complete Test Bank With Answers

Sample Questions Posted Below

Electricity for the Trades, 3e (Petruzella)

Chapter 5 Simple, Series, and Parallel Circuits

1) Use of symbols tends to make circuit diagrams more complicated.

2) Electrical symbols always look like the part they represent.

3) All batteries supply DC power.

4) The output voltage connections of an AC power supply are identified as being positive or negative.

5) The function of a circuit breaker is similar to that of a fuse.

6) For a normally closed pushbutton, the contacts are closed (ON position) whenever the button is not pressed.

7) All electrical load devices convert the energy of the source to another form of energy.

8) Resistors are used to limit and control the flow of current in a circuit.

9) Power distribution systems are often shown using single-line diagrams.

10) Unlike schematic diagrams, wiring diagrams show the actual connection and placement of all components.

11) The symbol shown is used to represent a(n)

1. A) AC power source.
2. B) DC power source.
3. C) open power source.
4. D) closed power source.

12) The symbol shown is used to represent a(n)

1. A) AC power source.
2. B) DC power source.
3. C) open power source.
4. D) closed power source.

13) The symbol shown is used to represent

1. A) wires crossed.
2. B) a lamp holder.
3. C) a circuit breaker.
4. D) a fuse.

14) Which symbol would be used to represent the device shown?

A)

B)

C)

D)

15) Which symbol would be used to represent the device shown?

A)

B)

C)

D)

16) A fuse is used to:

1. A) protect circuit wiring and equipment.
2. B) allow only currents within safe limits to flow.
3. C) automatically open the circuit when a higher current flows.
4. D) All of the answers are correct.

17) Which of the following electrical diagrams is easiest to read?

1. A) pictorial
2. B) wiring
3. C) perspective
4. D) schematic

18) Which of the following electrical diagrams is impractical for complex circuits?

1. A) pictorial
2. B) wiring
3. C) perspective
4. D) schematic

19) The electrical diagram shown would be classified as a ________ type.

1. A) schematic
2. B) block
3. C) single line
4. D) pictorial

20) When loads are connected end to end they are said to be connected in series.

21) For series connected loads, the same amount of current flows through each of the loads.

22) For series connected loads, there are as many current paths as there are loads.

23) For series connected loads, the higher the resistance of the load the less voltage it receives.

24) In a series circuit, the current flow stops if the circuit is broken at any point.

25) The truth table is for two switches connected in series used to control a lamp.

26) The circuit shows two switches connected in parallel.

27) When load devices are operated in parallel, each load operates independently of the others.

28) When load devices are operated in parallel, the voltage across each load is the same as that of the voltage source.

29) Connecting control devices in parallel results in an OR type of control circuit.

30) The circuit shown would be classified as a ________circuit.

1. A) simple
2. B) series
3. C) parallel
4. D) series/parallel

31) For the circuit shown, the voltage across each light would be:

1. A) 12 V.
2. B) 6 V.
3. C) 4 V.
4. D) 2 V.

32) A string of lamps is connected in series to a voltage source. This connection would result in:

1. A) two voltage paths.
2. B) one voltage path.
3. C) one current path.
4. D) two current paths.

33) An AND-type control circuit consists of switches connected in:

1. A) parallel.
2. B) parallel and series combination.
3. C) series.
4. D) series and parallel combination.

34) Three lamps are connected in parallel to a 6-V source. The voltage across each lamp would be:

1. A) 12 V.
2. B) 6 V.
3. C) 4 V.
4. D) 2 V.

35) A string of lamps is connected in parallel to a voltage source. If one lamp burns out, all the other lamps:

1. A) will go out.
2. B) will get brighter.
3. C) will not be affected.
4. D) will get dimmer.

36) If a circuit is constructed to allow the electrons to follow in only one possible path, the circuit is called:

1. A) a series-parallel circuit.
2. B) an open circuit.
3. C) a series circuit.
4. D) a parallel circuit.

37) For the circuit shown, the voltage applied to each device would be

1. A) 120 V.
2. B) 90 V.
3. C) 60 V.
4. D) 30 V.

38) Breadboarding refers to:

1. A) building a temporary version of a circuit.
2. B) building a permanent version of a circuit.
3. C) troubleshooting a circuit.
4. D) repairing a circuit.

39) When current stops flowing because of a break in a circuit, the condition is usually called

1. A) an open circuit.
2. B) a short circuit.
3. C) a grounded circuit.
4. D) an intermittent circuit.

40) Which is the best description of a short circuit?

1. A) The control device in the circuit is bypassed and a much higher than normal voltage is applied.
2. B) The load in the circuit is bypassed, and a much larger than normal current flows.
3. C) The protective device in the circuit is open and a much smaller than normal current flows.
4. D) The power source in the circuit is interrupted and no current flows.

Electricity for the Trades, 3e (Petruzella)

Chapter 5 Simple, Series, and Parallel Circuits

1) Use of symbols tends to make circuit diagrams more complicated.

Answer: FALSE

Difficulty: 1 Easy

Learning Objective: Explain why symbols are used to represent electrical components.

Bloom’s: Understand

Accessibility: Keyboard Navigation

2) Electrical symbols always look like the part they represent.

Answer: FALSE

Difficulty: 1 Easy

Learning Objective: Explain why symbols are used to represent electrical components.

Bloom’s: Understand

Accessibility: Keyboard Navigation

3) All batteries supply DC power.

Answer: TRUE

Difficulty: 1 Easy

Learning Objective: Explain the operation of basic electrical devices.

Bloom’s: Understand

Accessibility: Keyboard Navigation

4) The output voltage connections of an AC power supply are identified as being positive or negative.

Answer: FALSE

Difficulty: 1 Easy

Learning Objective: Explain the symbols used to represent electrical components.

Bloom’s: Understand

Accessibility: Keyboard Navigation

5) The function of a circuit breaker is similar to that of a fuse.

Answer: TRUE

Difficulty: 1 Easy

Learning Objective: Explain the symbols used to represent electrical components.

Bloom’s: Understand

Accessibility: Keyboard Navigation

6) For a normally closed pushbutton, the contacts are closed (ON position) whenever the button is not pressed.

Answer: TRUE

Difficulty: 2 Medium

Learning Objective: Explain the symbols used to represent electrical components.

Bloom’s: Understand

Accessibility: Keyboard Navigation

7) All electrical load devices convert the energy of the source to another form of energy.

Answer: TRUE

Difficulty: 1 Easy

Learning Objective: Explain the operation of basic electrical devices.

Bloom’s: Understand

Accessibility: Keyboard Navigation

8) Resistors are used to limit and control the flow of current in a circuit.

Answer: TRUE

Difficulty: 1 Easy

Learning Objective: Explain the operation of basic electrical devices.

Bloom’s: Understand

Accessibility: Keyboard Navigation

9) Power distribution systems are often shown using single-line diagrams.

Answer: TRUE

Difficulty: 2 Medium

Learning Objective: Describe pictorial, schematic, wiring, block, and single-line diagrams.

Bloom’s: Understand

Accessibility: Keyboard Navigation

10) Unlike schematic diagrams, wiring diagrams show the actual connection and placement of all components.

Answer: TRUE

Difficulty: 1 Easy

Learning Objective: Describe pictorial, schematic, wiring, block, and single-line diagrams.

Bloom’s: Understand

Accessibility: Keyboard Navigation

11) The symbol shown is used to represent a(n)

1. A) AC power source.
2. B) DC power source.
3. C) open power source.
4. D) closed power source.

Answer: B

Difficulty: 1 Easy

Learning Objective: Identify the symbol used to represent an electrical device.

Bloom’s: Remember

Accessibility: Keyboard Navigation

12) The symbol shown is used to represent a(n)

1. A) AC power source.
2. B) DC power source.
3. C) open power source.
4. D) closed power source.

Answer: A

Difficulty: 1 Easy

Learning Objective: Identify the symbol used to represent an electrical device.

Bloom’s: Remember

Accessibility: Keyboard Navigation

13) The symbol shown is used to represent

1. A) wires crossed.
2. B) a lamp holder.
3. C) a circuit breaker.
4. D) a fuse.

Answer: C

Difficulty: 1 Easy

Learning Objective: Identify the symbol used to represent an electrical device.

Bloom’s: Remember

Accessibility: Keyboard Navigation

14) Which symbol would be used to represent the device shown?

A)

B)

C)

D)

Answer: A

Difficulty: 1 Easy

Learning Objective: Identify the symbol used to represent an electrical device.

Bloom’s: Remember

Accessibility: Keyboard Navigation

15) Which symbol would be used to represent the device shown?

A)

B)

C)

D)

Answer: C

Difficulty: 1 Easy

Learning Objective: Identify the symbol used to represent an electrical device.

Bloom’s: Remember

Accessibility: Keyboard Navigation

16) A fuse is used to:

1. A) protect circuit wiring and equipment.
2. B) allow only currents within safe limits to flow.
3. C) automatically open the circuit when a higher current flows.
4. D) All of the answers are correct.

Answer: D

Difficulty: 2 Medium

Learning Objective: Explain the operation of basic electrical devices.

Bloom’s: Understand

Accessibility: Keyboard Navigation

17) Which of the following electrical diagrams is easiest to read?

1. A) pictorial
2. B) wiring
3. C) perspective
4. D) schematic

Answer: D

Difficulty: 2 Medium

Learning Objective: Describe pictorial, schematic, wiring, block, and single-line diagrams.

Bloom’s: Understand

Accessibility: Keyboard Navigation

18) Which of the following electrical diagrams is impractical for complex circuits?

1. A) pictorial
2. B) wiring
3. C) perspective
4. D) schematic

Answer: A

Difficulty: 1 Easy

Learning Objective: Describe pictorial, schematic, wiring, block, and single-line diagrams.

Bloom’s: Understand

Accessibility: Keyboard Navigation

19) The electrical diagram shown would be classified as a ________ type.

1. A) schematic
2. B) block
3. C) single line
4. D) pictorial

Answer: D

Difficulty: 1 Easy

Learning Objective: Describe pictorial, schematic, wiring, block, and single-line diagrams.

Bloom’s: Understand

Accessibility: Keyboard Navigation

20) When loads are connected end to end they are said to be connected in series.

Answer: TRUE

Difficulty: 1 Easy

Learning Objective: Explain the operation of series-connected loads and control devices.

Bloom’s: Understand

Accessibility: Keyboard Navigation

21) For series connected loads, the same amount of current flows through each of the loads.

Answer: TRUE

Difficulty: 1 Easy

Learning Objective: Explain the operation of series-connected loads and control devices.

Bloom’s: Understand

Accessibility: Keyboard Navigation

22) For series connected loads, there are as many current paths as there are loads.

Answer: FALSE

Difficulty: 1 Easy

Learning Objective: Explain the operation of series-connected loads and control devices.

Bloom’s: Understand

Accessibility: Keyboard Navigation

23) For series connected loads, the higher the resistance of the load the less voltage it receives.

Answer: FALSE

Difficulty: 1 Easy

Learning Objective: Explain the operation of series-connected loads and control devices.

Bloom’s: Understand

Accessibility: Keyboard Navigation

24) In a series circuit, the current flow stops if the circuit is broken at any point.

Answer: TRUE

Difficulty: 1 Easy

Learning Objective: Explain the operation of series-connected loads and control devices.

Bloom’s: Understand

Accessibility: Keyboard Navigation

25) The truth table is for two switches connected in series used to control a lamp.

Answer: FALSE

Difficulty: 2 Medium

Learning Objective: Explain the operation of series-connected loads and control devices.

Bloom’s: Understand

Accessibility: Keyboard Navigation

26) The circuit shows two switches connected in parallel.

Answer: FALSE

Difficulty: 2 Medium

Learning Objective: Explain the operation of parallel-connected loads and control devices.

Bloom’s: Understand

Accessibility: Keyboard Navigation

27) When load devices are operated in parallel, each load operates independently of the others.

Answer: TRUE

Difficulty: 2 Medium

Learning Objective: Explain the operation of parallel-connected loads and control devices.

Bloom’s: Understand

Accessibility: Keyboard Navigation

28) When load devices are operated in parallel, the voltage across each load is the same as that of the voltage source.

Answer: TRUE

Difficulty: 2 Medium

Learning Objective: Explain the operation of parallel-connected loads and control devices.

Bloom’s: Understand

Accessibility: Keyboard Navigation

29) Connecting control devices in parallel results in an OR type of control circuit.

Answer: TRUE

Difficulty: 1 Easy

Learning Objective: Explain the operation of parallel-connected loads and control devices.

Bloom’s: Understand

Accessibility: Keyboard Navigation

30) The circuit shown would be classified as a ________circuit.

1. A) simple
2. B) series
3. C) parallel
4. D) series/parallel

Answer: A

Difficulty: 1 Easy

Learning Objective: Identify a simple electrical circuit.

Bloom’s: Remember

Accessibility: Keyboard Navigation

31) For the circuit shown, the voltage across each light would be:

1. A) 12 V.
2. B) 6 V.
3. C) 4 V.
4. D) 2 V.

Answer: B

Difficulty: 2 Medium

Learning Objective: Explain the operation of series-connected loads and control devices.

Bloom’s: Understand

Accessibility: Keyboard Navigation

32) A string of lamps is connected in series to a voltage source. This connection would result in:

1. A) two voltage paths.
2. B) one voltage path.
3. C) one current path.
4. D) two current paths.

Answer: C

Difficulty: 2 Medium

Learning Objective: Explain the operation of series-connected loads and control devices.

Bloom’s: Understand

Accessibility: Keyboard Navigation

33) An AND-type control circuit consists of switches connected in:

1. A) parallel.
2. B) parallel and series combination.
3. C) series.
4. D) series and parallel combination.

Answer: C

Difficulty: 1 Easy

Learning Objective: Explain the operation of series-connected loads and control devices.

Bloom’s: Understand

Accessibility: Keyboard Navigation

34) Three lamps are connected in parallel to a 6-V source. The voltage across each lamp would be:

1. A) 12 V.
2. B) 6 V.
3. C) 4 V.
4. D) 2 V.

Answer: B

Difficulty: 2 Medium

Learning Objective: Explain the operation of parallel-connected loads and control devices.

Bloom’s: Understand

Accessibility: Keyboard Navigation

35) A string of lamps is connected in parallel to a voltage source. If one lamp burns out, all the other lamps:

1. A) will go out.
2. B) will get brighter.
3. C) will not be affected.
4. D) will get dimmer.

Answer: C

Difficulty: 2 Medium

Learning Objective: Explain the operation of parallel-connected loads and control devices.

Bloom’s: Understand

Accessibility: Keyboard Navigation

36) If a circuit is constructed to allow the electrons to follow in only one possible path, the circuit is called:

1. A) a series-parallel circuit.
2. B) an open circuit.
3. C) a series circuit.
4. D) a parallel circuit.

Answer: C

Difficulty: 2 Medium

Learning Objective: Explain the operation of series-connected loads and control devices.

Bloom’s: Understand

Accessibility: Keyboard Navigation

37) For the circuit shown, the voltage applied to each device would be

1. A) 120 V.
2. B) 90 V.
3. C) 60 V.
4. D) 30 V.

Answer: A

Difficulty: 2 Medium

Learning Objective: Explain the operation of parallel-connected loads and control devices.

Bloom’s: Understand

Accessibility: Keyboard Navigation

38) Breadboarding refers to:

1. A) building a temporary version of a circuit.
2. B) building a permanent version of a circuit.
3. C) troubleshooting a circuit.
4. D) repairing a circuit.

Answer: A

Difficulty: 1 Easy

Learning Objective: Know the terminology involved in constructing circuits from schematics.

Bloom’s: Remember

Accessibility: Keyboard Navigation

39) When current stops flowing because of a break in a circuit, the condition is usually called

1. A) an open circuit.
2. B) a short circuit.
3. C) a grounded circuit.
4. D) an intermittent circuit.

Answer: A

Difficulty: 1 Easy

Learning Objective: Identify short and open circuit faults.

Bloom’s: Remember

Accessibility: Keyboard Navigation

40) Which is the best description of a short circuit?

1. A) The control device in the circuit is bypassed and a much higher than normal voltage is applied.
2. B) The load in the circuit is bypassed, and a much larger than normal current flows.
3. C) The protective device in the circuit is open and a much smaller than normal current flows.
4. D) The power source in the circuit is interrupted and no current flows.

Answer: B

Difficulty: 1 Easy

Learning Objective: Identify short and open circuit faults.

Bloom’s: Remember

Accessibility: Keyboard Navigation

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