WorksheetsElectrical and Communications Engineering
Total questions: 17
Worksheet time: 20mins
What is the SI unit of electric current?
ohm
volt
watt
ampere
What is the formula for calculating capacitance?
C = Q/V
C = I/V
C = R*T
C = V/Q
According to Ohm's Law, what is the relationship between voltage, current, and resistance?
Resistance (R) = Voltage (V) - Current (I)
Voltage (V) = Current (I) * Resistance (R)
Voltage (V) = Resistance (R) / Current (I)
Current (I) = Voltage (V) + Resistance (R)
What is the function of a transistor in an electronic circuit?
To increase voltage without amplification
To convert AC to DC
To store electrical energy
The function of a transistor in an electronic circuit is to act as a switch or amplifier.
What is the primary purpose of an amplifier?
To convert analog signals to digital signals.
To filter out unwanted noise from a signal.
To increase the amplitude of a signal.
To decrease the frequency of a signal.
What are the main components of an electrical power supply?
Inverter, Capacitor, Inductor, Circuit Breaker
Transformer, Rectifier, Filter, Voltage Regulator
Generator, Relay, Fuse, Load
Battery, Switch, Resistor, Diode
Which instrument is used to measure voltage?
Ohmmeter
Ammeter
Voltmeter
Wattmeter
What is the unit of capacitance?
watt
ohm
farad
volt
What is the effect of temperature on the resistance of a conductor?
Resistance of a conductor decreases with temperature.
Resistance of a conductor increases with temperature.
Resistance of a conductor remains constant regardless of temperature.
Temperature has no effect on the resistance of a conductor.
What are the advantages of using transistors over vacuum tubes?
Transistors are larger and heavier than vacuum tubes.
Transistors are smaller, more energy-efficient, reliable, faster, and cheaper than vacuum tubes.
Transistors require more power to operate than vacuum tubes.
Transistors are less reliable and more expensive than vacuum tubes.
What is the function of a diode in an electrical circuit?
The function of a diode in an electrical circuit is to allow current to flow in one direction only.
To measure the current flowing through a circuit.
To increase the voltage in a circuit.
To store electrical energy for later use.
What is the primary function of a resistor in an electrical circuit?
To store electrical energy.
To amplify signals.
To limit the flow of current.
To convert AC to DC.
What is the purpose of a transformer in power systems?
To measure electrical current.
To convert electrical energy into mechanical energy.
To change the voltage level of an electrical signal.
To store energy for later use.
What is the role of an inductor in an electrical circuit?
To measure the voltage across a circuit.
To convert electrical energy into heat.
To amplify electrical signals.
To store electrical energy in a magnetic field.
What is the unit of electrical resistance?
ampere
farad
volt
ohm
What is the primary function of a capacitor in an electrical circuit?
To convert electrical energy into mechanical energy.
To increase the current in a circuit.
To store electrical energy in an electric field.
To measure the voltage across a circuit.
What is the role of a circuit breaker in an electrical system?
To measure the current flowing through a circuit.
To protect the circuit from overloads and short circuits.
To increase the voltage in a circuit.
To convert AC to DC.
