Question 1

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?

Accepted Answer

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

Question 2

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?

Accepted Answer

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

Question 3

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?

Accepted Answer

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

Question 4

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?

Accepted Answer

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

Question 5

A diode is used for all of the following EXCEPT :

Accepted Answer

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 6

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?

Accepted Answer

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

Question 7

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

Accepted Answer

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 8

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

Accepted Answer

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

Question 9

All of the following are digital pulse trains EXCEPT:

Accepted Answer

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

Question 10

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?

Accepted Answer

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

Question 11

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?

Accepted Answer

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

Question 12

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

Accepted Answer

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

Question 13

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?

Accepted Answer

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

Question 14

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?

Accepted Answer

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

Question 15

Which of the statements concerning parallel circuits is NOT true?

Accepted Answer

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 16

Which substance is an example of an insulator?

Accepted Answer

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

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?

Accepted Answer

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

Question 18

Which statement concerning series circuits is NOT true?

Accepted Answer

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 19

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

Accepted Answer

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

Question 20

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

Accepted Answer

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

Exam 1: A Review of Electricity and Electronics

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?

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?

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 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 diode is used for all of the following EXCEPT :

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?

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

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

All of the following are digital pulse trains EXCEPT:

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?

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?

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

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?

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?

Which of the statements concerning parallel circuits is NOT true?

Which substance is an example of an insulator?

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?

Which statement concerning series circuits is NOT true?

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

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