Electronics

What is the purpose of a transistor in electronic circuits?

• To regulate voltage

• To store data

• To filter noise

• To amplify or switch electronic signals

Which type of semiconductor device acts as a one-way valve for electric current?

• Diode

• Inductor

• Transistor

• Capacitor

What is the purpose of a transistor in electronic circuits?

• To filter noise

• To amplify or switch electronic signals

• To regulate voltage

• To store data

The fixed resistors restrict the flow of current up to what level?

• Variable range
  

• Any range

• Certain level

• Infinite level

Capacitance can be defined as the ratio of the electric charge on each conductor to what between them?

• Potential difference
  

• Electric difference

• Potential energy

• Voltage difference

The ganged capacitor is the combination of what?

• One variable capacitor and one polarized capacitor
  
  
  

• One fixed capacitor and one variable capacitor

• Two fixed capacitors

• Two variable capacitors

What is the function of an inductor?

• Makes the change in current

• Allows the constant current

• Oppose the change in current

• Allows the change in current

If the inductance increases then which of the following don’t increase?

• Cross sectional area
  

• Frequency

• No of windings

• No of windings

A transistor has?

• 1. one pn junction

• two pn junctions

• 1. three pn junctions

• 1. four pn junctions

A transistor is a …………… operated device

• 1. current

• 1. voltage

• 1. both voltage and current

• 1. none of the above