Deck 1: A Review of Electricity and Electronics

Question 1

Technician A says an atom that loses or gains one electron is balanced. Technician B says an atom that loses or gains one electron becomes a charged particle or ion. Who is correct?

A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B

Answer 1

B

Question 2

A taillight bulb is glowing dimly. A voltmeter placed across the bulb reads 4 volts. Technician A says there may be excessive resistance in the ground circuit. Technician B says there may be excessive resistance in the power feed circuit. Who is correct?

A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B

Answer 2

C

Question 3

An H-gate is used by a computer to reverse current flow in a load component that it controls.  What does an H-gate consist of?

A) Two pairs of diodes
B) Two pairs of transistors
C) Two pairs of resistors
D) Two pairs of capacitors

Answer 3

B

Question 4

Technician A says amperage is the same at any point in a series circuit. Technician B says the total resistance is the sum of all resistance in a series circuit. Who is correct?

A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B

Question 5

Which device is represented by the symbol in Figure 2 above ?

A) Diode
B) Capacitor
C) PNP transistor
D) NPN transistor

Question 6

Which condition could cause a circuit's fuse to burn open due to excessive current flow?

A) A loose electrical connection that intermittently opens the circuit, causing an electrical arc
B) A shorted winding within a load component
C) High electrical resistance within the load component
D) Both A and B

Question 7

Technician A says that a diode is an electrical one-way check valve with no moving parts. Technician B says that a transistor is an electronic switch with no moving parts. Who is correct?

A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B

Question 8

All of the following are digital pulse trains EXCEPT:

A) variable digital frequency
B) binary code or serial data
C) continuous time-signal
D) variable pulse width

Question 9

The three essential parts of an operating circuit include all of the following EXCEPT the:

A) voltage source
B) circuitry
C) switch
D) load component

Question 10

Which of the statements concerning parallel circuits is NOT true?

A) The total circuit resistance is always lower than the resistance of the leg with the lowest resistance
B) The current through each leg will be different if the resistance of the loads in each leg is different
C) The sum of the current of all the legs is the total circuit current
D) The combined voltage drop of all the legs equals the total voltage drop

Question 11

Which substance is an example of an insulator?

A) Copper
B) Silicon
C) Ceramic
D) Germanium

Question 12

If a battery with 12 volts was connected to a series circuit that had a total resistance of 3 ohms, how much current would flow in the circuit?

A) 25 amps
B) 4 amps
C) 12 amps
D) 36 amps

Question 13

Which statement concerning series circuits is NOT true?

A) The sum of the voltage drops equals the source voltage
B) The amount of current (amperes) flowing through the circuit is the same throughout the circuit
C) The voltage drop across each load is different if the resistance of the loads is different
D) The total resistance is equal to the lowest resistance in the circuit

Question 14

Technician A says diodes are used to rectify the voltage produced from an AC generator. Technician B says a zener diode is designed to protect circuit components from voltage spikes. Who is correct?

A) Technician A only
B) Technician B only
C) both A and B
D) neither A nor B

Question 15

Technician A says that voltage drop occurs in a circuit only when the circuit is complete and current is flowing. Technician B says that amperage is reduced as it passes through a series circuit. Who is correct?

A) Technician Technician A only
B) Technician Technician B only
C) Both A and B
D) Neither A nor B

Question 16

If a digital sensor sends the computer a variable digital frequency, what unit of measurement is applicable to the sensor's signal?

A) DC Volts (DCV)
B) Hertz (Hz)
C) Duty cycle (%)
D) Pulse width (ms)

Question 17

Technician A says current will increase with a decrease in resistance. Technician B says current will decrease with an increase in resistance. Who is correct?

A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B

Question 18

A diode is used for all of the following EXCEPT :

A) AC to DC voltage rectification
B) controlling current flow paths in circuits that share a common load
C) switching a load device on and off
D) voltage spike suppression

Question 19

A circuit has two 10 ohm resistors in parallel. What is the total circuit resistance?

A) 30 ohms
B) 15 ohms
C) 10 ohms
D) Less than 10 ohms

Question 20

Technician A says when a magnetic field is moved across a conductor, voltage will be induced in the conductor. Technician B says when a conductor is moved across a magnetic field, voltage will be induced in the conductor. Who is correct?

A) Technician A only
B) Technician B only
C) Both A and B
D) NeitherA nor B