Electronic components

Multiple Choice

What component does the picture above represent?

• Battery

• Light bulb

• Ammeter

• Resistor

Open Ended

List three fields where electronics are used and provide an example of equipment for each.

Open Ended

What is the overall implication about the "silent battle"?

Open Ended

What is the KCO system designed to do?

Open Ended

What is the "vampire" system mentioned?

Open Ended

What effects do Russian electronic warfare systems have on Ukrainian forces?

Open Ended

How are drones used in modern warfare?

Multiple Choice

What are the properties exhibited by semi-conducting materials?

• Conducting only

• Insulating only

• Both conducting and insulating

• Neither conducting nor insulating

Multiple Choice

What is the process called when small amounts of other elements are added to silicon to make it a semiconductor?

• Doping

• Conducting

• Insulating

• Transmitting

Multiple Choice

3. Which of the following is a pentavalent impuity added while forming an extrinsic semiconductor ?

• (a) Boron 
• Arsenic
• Indium
• Gallium

Multiple Choice

What is the difference between P-type and N-type doping in silicon?

• P-type adds extra electrons

• N-type creates holes

• P-type adds boron or gallium

• N-type adds phosphorus or arsenic

Multiple Choice

1. The resistivity of a semiconductor lies between 

• (a)10 ^-6 Ωm to10^-8 Ωm
• n(b) 10⁸ Ωm to10¹⁴ Ωm
• (c) 10 ^-2 Ωm to10⁴ Ωm
• (d) none of these

Multiple Choice

2. The forbiddenn energy gap for Germanium is of the order of

• (a) 0.7 eV
• (b) 0.3 eV
• (c) 1.1 eV
• (d) 10 eV

Multiple Select

Select all true statements.

• This component is a light emitting diode

• It only allows current to flow one way

• It is temperature dependent

• It depends on light intensity

Multiple Select

Select all true statements

• This component is a light emitting diode

• It only allows current to flow one way

• It is temperature dependent

• It depends on light intensity

Multiple Choice

What are the three leads of a transistor?

• Emitter

• Collector

• Base

• Diode

Multiple Choice

What are the two main applications of transistors mentioned in the text?

• High-power applications

• Low-power applications

• Both high and low power applications

• None of the above

Multiple Choice

What is considered one of the greatest inventions of the 20th century?

• The computer

• The transistor

• The smartphone

• The television

Multiple Choice

What are transistors?

• Active components that control current or voltage

• Passive components that store energy

• Components that only conduct current

• Components that only resist current

Multiple Choice

What are the configurations of PNP and NPN transistors?

• PNP: N-layer between 2 P-layers

• NPN: P-layer between 2 N-layers

• Both configurations are the same

• PNP: P-layer between 2 N-layers

Open Ended

What is the primary use of a Field Effect Transistor (FET)?

Open Ended

What are the terminals of a Bipolar Junction Transistor (BJT)?

Multiple Choice

What are the two main types of transistors mentioned in the image?

• BJT

• FET

• MOSFET

• IGBT

Multiple Choice

What are the major differences between BJT and FET transistors?

• BJT has three terminals, FET has four terminals

• BJT is current-controlled, FET is voltage-controlled

• BJT is used for low-frequency applications, FET is used for high-frequency applications

• BJT is more efficient than FET

Multiple Choice

What are the two main functions of transistors as mentioned in the image?

• Switch

• Amplifier

• Resistor

• Capacitor

Multiple Choice

Complete the map with the missing words: 1. ____________________ electronic components; 2. ____________________ ; 3. ____________________ configuration; 4. ____________________ ; 5. base; 6. ____________________ ; 7. drain; 8. ____________________ blocks or unblocks current; 9. ____________________ makes current bigger.

• BJT

• transistor

• FET

• current amplifier

Multiple Choice

What is the function of a resistor in an electronic circuit?

• Control the flow of electric current

• Store electric energy

• Increase voltage

• Decrease resistance

Multiple Choice

A 5uF, a 10uF and a 20uF capacitor are connected in PARALLEL to a 6V battery. Calculate the total equivalent capacitance of the circuit?

• 35uF

• 0,35uF

• 2,857uF

• 0,0286uF

Multiple Choice

What is the function of a diode?

• Act as a two-way street for current

• Act as a one-way street for current

• Store electrical energy

• Increase voltage

Multiple Choice

Which of the following is true about the resistance of a Zener diode?

• a) It has an incremental resistance

• b) It has dynamic resistance

• c) The value of the resistance is the inverse of the slope of the i-v characteristics of the Zener diode

• d) All of the mentioned

Multiple Choice

Component that Convert AC to DC and allow current to flow in one Direction

• Capacitor

• Diode

• Inverter

• Resistor

Multiple Choice

A diode is a semiconductor that is used to-

• amplify electrical signals.

• create a magnetic field.

• allow current to flow in only one direction.

• turn the flow of electricity on and off.

Multiple Choice

What is the main function of a diode in an electrical circuit?

• Amplify signals

• Regulate voltage

• Allow current flow in one direction only

Multiple Choice

What is the total power a transistor can safely dissipate?

• PTOT

• hFE

• ICmax

• VCO

Multiple Choice

What does the term 'maximum usable frequency limit' refer to in transistor specifications?

• hFE

• VCO

• fmax

• ICmax

Multiple Choice

What is the maximum continuous collector current that a transistor can safely pass?

• ICmax

• VCO

• fmax

• PTOT

Multiple Choice

What is the maximum safe operating voltage between the collector and the emitter when the base is open?

• VCO

• hFE

• ICmax

• PTOT

Multiple Choice

What does the symbol hFE represent in the context of transistors?

• Voltage

• Gain

• Current

• Power

Multiple Choice

What are the two main functions of transistors as mentioned in the text?

• Amplification

• Switching

• Rectification

• Modulation

Multiple Choice

What do the colour bands on electric components represent?

• Resistance (Ω)

• Capacitance (F)

• Inductance (H)

• Voltage (V)

Multiple Choice

What do the colors on a 4-band resistor represent?

• 1st digit, 2nd digit, multiplier, tolerance

• Resistance value only

• Color code for capacitors

• Voltage rating

Multiple Choice

What does the color coding on capacitors indicate?

• Capacitance value

• Voltage rating

• Tolerance level

• All of the above

Multiple Choice

What is the unit of capacitance?

• Ohm

• Farad

• Volt

• Ampere

Multiple Choice

What happens to the capacitance of a capacitor if the area of the plates is doubled?

• The capacitance is halved

• The capacitance remains the same

• The capacitance is doubled

• The capacitance is quadrupled

Multiple Choice

What effect does increasing the distance between the plates of a capacitor have on its capacitance?

• Increases the capacitance

• Decreases the capacitance

• Has no effect on the capacitance

• Initially increases then decreases the capacitance

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident