HAM exam Review Questions with 100% Correct
Answers
In which type of circuit is DC current the same through all components? - ✔✔A series circuit
In which type of circuit is the voltage the same across all components? - ✔✔A parallel circuit
Why are metals generally good conductors of electricity? - ✔✔They have many free
electrons
Which of the following is a good electrical insulator? - ✔✔Glass
Which term describes the rate at which electrical energy is used? - ✔✔Power
Electrical power is measured in which of the following units? - ✔✔Watts
What is the formula used to calculate electrical power in a DC circuit? - ✔✔P = E x I
How much power is delivered by a voltage of 13.8 volts DC in a current of 10 amperes? -
✔✔P = 13.8 volts x 10 amperes = 138 Watts
Scientific Notation - ✔✔GMK BASE MMNP
Test asks (from large to small): giga-, mega-, kilo-, BASE, milli-, micro-, nano-, and pico-
(10^9, 10^6, 10^3, base, 10^-3, 10^-6, 10^-9, 10^-12)
What is the unit of capacitance? - ✔✔Farad
,What is equal to 1,000,000 pF? - ✔✔1 microfarad
Power Ratios (dB) - ✔✔3 dB = 2:1
6 dB = 4:1
10 dB = 10:1
Which decibel value most closely represents a power increase from 5 watts to 10 watts? -
✔✔3 dB
Which decibel value most closely represents a power decrease from 12 watts to 3 watts? -
✔✔-6 dB
What electrical component opposes the flow of current in a DC circuit? - ✔✔Resistor
What type of component is often used as an adjustable volume control? - ✔✔Potentiometer
Which electrical parameter is controlled by a potentiometer? - ✔✔Resistance
What type of electrical component consists of conductive surfaces separated by an insulator? -
✔✔Capacitor
What electrical component stores energy in an electric field? - ✔✔Capacitor
What describes the ability to store energy in an electric field? - ✔✔Capacitance
Which electrical component is typically constructed as a coil of wire? - ✔✔Inductor
,What type of electrical component stores energy in a magnetic field? - ✔✔Inductor
What describes the ability to store energy in a magnetic field? - ✔✔Inductance
What is the unit of inductance? - ✔✔The Henry
Which of the following battery chemistries is rechargeable? - ✔✔All of these choices are
correct (Nickel Metal Hydride, Lithium Ion, Lead Acid)
Which of the following battery chemistries is not rechargeable? - ✔✔Carbon Zinc
What electronic component allows current to flow in only one direction? - ✔✔The diode
What are the names for the electrodes of a diode? - ✔✔Anode and cathode
How is the cathode lead of a semiconductor diode often marked on the package? - ✔✔A
stripe
Which is true about forward voltage drop in a diode? - ✔✔It is lower in some diode types
than in others
What causes an LED to emit light? - ✔✔Forward DC current
Which of the following is commonly used as a visual indicator? - ✔✔An LED
Which component can be used as an electronic switch? - ✔✔Transistor
, What is the term that describes a device's ability to amplify a signal? - ✔✔Gain
Which of the following can provide power gain? - ✔✔Transistor
Which of the following components can consist of three regions of semiconductor material? -
✔✔Transistor
What are the names of the electrodes of a bipolar junction transistor? - ✔✔Base, collector,
emitter
What does the abbreviation FET stand for? - ✔✔Field-Effect Transistor
What type of transistor has a gate, drain, and source? - ✔✔A FET
What is component #1 in T1? - ✔✔Resistor
What is component #2 in T1? - ✔✔Transistor
What is component #3 in T1? - ✔✔Lamp
What is component #4 in T1? - ✔✔Battery
What is the function of component #2 in T1? - ✔✔To control the flow of current
What type of switch is represented by #3 in T2? - ✔✔SPST (single pole, single throw) switch
Answers
In which type of circuit is DC current the same through all components? - ✔✔A series circuit
In which type of circuit is the voltage the same across all components? - ✔✔A parallel circuit
Why are metals generally good conductors of electricity? - ✔✔They have many free
electrons
Which of the following is a good electrical insulator? - ✔✔Glass
Which term describes the rate at which electrical energy is used? - ✔✔Power
Electrical power is measured in which of the following units? - ✔✔Watts
What is the formula used to calculate electrical power in a DC circuit? - ✔✔P = E x I
How much power is delivered by a voltage of 13.8 volts DC in a current of 10 amperes? -
✔✔P = 13.8 volts x 10 amperes = 138 Watts
Scientific Notation - ✔✔GMK BASE MMNP
Test asks (from large to small): giga-, mega-, kilo-, BASE, milli-, micro-, nano-, and pico-
(10^9, 10^6, 10^3, base, 10^-3, 10^-6, 10^-9, 10^-12)
What is the unit of capacitance? - ✔✔Farad
,What is equal to 1,000,000 pF? - ✔✔1 microfarad
Power Ratios (dB) - ✔✔3 dB = 2:1
6 dB = 4:1
10 dB = 10:1
Which decibel value most closely represents a power increase from 5 watts to 10 watts? -
✔✔3 dB
Which decibel value most closely represents a power decrease from 12 watts to 3 watts? -
✔✔-6 dB
What electrical component opposes the flow of current in a DC circuit? - ✔✔Resistor
What type of component is often used as an adjustable volume control? - ✔✔Potentiometer
Which electrical parameter is controlled by a potentiometer? - ✔✔Resistance
What type of electrical component consists of conductive surfaces separated by an insulator? -
✔✔Capacitor
What electrical component stores energy in an electric field? - ✔✔Capacitor
What describes the ability to store energy in an electric field? - ✔✔Capacitance
Which electrical component is typically constructed as a coil of wire? - ✔✔Inductor
,What type of electrical component stores energy in a magnetic field? - ✔✔Inductor
What describes the ability to store energy in a magnetic field? - ✔✔Inductance
What is the unit of inductance? - ✔✔The Henry
Which of the following battery chemistries is rechargeable? - ✔✔All of these choices are
correct (Nickel Metal Hydride, Lithium Ion, Lead Acid)
Which of the following battery chemistries is not rechargeable? - ✔✔Carbon Zinc
What electronic component allows current to flow in only one direction? - ✔✔The diode
What are the names for the electrodes of a diode? - ✔✔Anode and cathode
How is the cathode lead of a semiconductor diode often marked on the package? - ✔✔A
stripe
Which is true about forward voltage drop in a diode? - ✔✔It is lower in some diode types
than in others
What causes an LED to emit light? - ✔✔Forward DC current
Which of the following is commonly used as a visual indicator? - ✔✔An LED
Which component can be used as an electronic switch? - ✔✔Transistor
, What is the term that describes a device's ability to amplify a signal? - ✔✔Gain
Which of the following can provide power gain? - ✔✔Transistor
Which of the following components can consist of three regions of semiconductor material? -
✔✔Transistor
What are the names of the electrodes of a bipolar junction transistor? - ✔✔Base, collector,
emitter
What does the abbreviation FET stand for? - ✔✔Field-Effect Transistor
What type of transistor has a gate, drain, and source? - ✔✔A FET
What is component #1 in T1? - ✔✔Resistor
What is component #2 in T1? - ✔✔Transistor
What is component #3 in T1? - ✔✔Lamp
What is component #4 in T1? - ✔✔Battery
What is the function of component #2 in T1? - ✔✔To control the flow of current
What type of switch is represented by #3 in T2? - ✔✔SPST (single pole, single throw) switch
