Welcome to the Electronics MDCAT MCQs with Answers. In this post, we have shared Electronics Multiple Choice Questions and Answers for PMC MDCAT 2024. Each question in MDCAT Physics offers a chance to enhance your knowledge regarding Electronics MCQs in this MDCAT Online Test.
Electronics MDCAT MCQs Test Preparations
What is the primary function of a diode?
a) Amplify signals
b) Block AC and allow DC to pass
c) Convert AC to DC
d) Store electrical energy
Which component is used to store electrical charge in a circuit?
a) Resistor
b) Capacitor
c) Inductor
d) Diode
The unit of capacitance is:
a) Ohm
b) Henry
c) Farad
d) Volt
Which of the following is a semiconductor device?
a) Resistor
b) Capacitor
c) Transistor
d) Inductor
In a transistor, which terminal is the control terminal?
a) Emitter
b) Collector
c) Base
d) Gate
Which type of transistor is known for current amplification?
a) Field Effect Transistor (FET)
b) Bipolar Junction Transistor (BJT)
c) Unipolar Transistor
d) Tunnel Transistor
The function of a resistor in a circuit is to:
a) Block DC
b) Store energy
c) Limit current flow
d) Amplify signals
What is the unit of electrical resistance?
a) Ohm
b) Watt
c) Farad
d) Ampere
Which electronic component is used to regulate voltage in a circuit?
a) Resistor
b) Capacitor
c) Voltage regulator
d) Diode
In a series circuit, the total resistance is:
a) The sum of the individual resistances
b) The reciprocal of the sum of the reciprocals of individual resistances
c) The average of individual resistances
d) Equal to the highest resistance
What does an op-amp (operational amplifier) primarily do?
a) Store charge
b) Amplify voltage
c) Regulate current
d) Convert AC to DC
Which of the following is a common type of logic gate?
a) Transformer
b) Amplifier
c) NAND
d) Capacitor
The frequency range of a typical audio signal is:
a) 20 Hz to 20 kHz
b) 1 kHz to 1 MHz
c) 1 Hz to 1 kHz
d) 10 kHz to 100 MHz
What is the primary function of a transformer in an electronic circuit?
a) Store electrical energy
b) Convert signal frequency
c) Change the voltage level
d) Filter noise
In a capacitive reactance circuit, reactance decreases with:
a) Increasing frequency
b) Decreasing frequency
c) Increasing capacitance
d) Decreasing capacitance
What is the primary use of a diode in rectification circuits?
a) To amplify signals
b) To convert AC to DC
c) To store energy
d) To control current flow
The gain of an amplifier is defined as:
a) The ratio of output voltage to input voltage
b) The difference between input and output voltages
c) The total power of the circuit
d) The rate of frequency change
In a digital circuit, which logic gate outputs true only when both inputs are true?
a) OR gate
b) AND gate
c) NOT gate
d) XOR gate
Which of the following is a non-linear device?
a) Resistor
b) Capacitor
c) Diode
d) Inductor
In a transistor, which terminal is used to control the current flow between the emitter and collector?
a) Base
b) Emitter
c) Collector
d) Gate
Which component is used to prevent current flow in the reverse direction?
a) Resistor
b) Inductor
c) Diode
d) Capacitor
The characteristic curve of a diode is called:
a) Load line
b) Transfer curve
c) V-I curve
d) Frequency response curve
What is the typical forward voltage drop across a silicon diode?
a) 0.2 V
b) 0.7 V
c) 1.2 V
d) 2.0 V
In an RC circuit, the time constant (τ) is given by:
a) R × C
b) R / C
c) C / R
d) 1 / (R × C)
Which type of amplifier is used to increase the power of a signal?
a) Operational amplifier
b) Voltage amplifier
c) Current amplifier
d) Power amplifier
What is the function of a rectifier circuit?
a) Convert AC to DC
b) Amplify signals
c) Store energy
d) Filter signals
Which component can be used to generate a square wave signal?
a) Oscillator
b) Diode
c) Transistor
d) Capacitor
What is the primary function of a transistor in switching applications?
a) Amplify the input signal
b) Convert AC to DC
c) Act as a switch to control current flow
d) Store charge
Which type of logic gate produces an output that is true only when exactly one of its inputs is true?
a) OR gate
b) AND gate
c) XOR gate
d) NOT gate
The basic unit of digital information in electronics is called a:
a) Byte
b) Bit
c) Nibble
d) Word
Which component is used to protect circuits from overvoltage conditions?
a) Capacitor
b) Resistor
c) Zener diode
d) Transistor
In a common-emitter transistor configuration, which terminal is the output terminal?
a) Base
b) Collector
c) Emitter
d) Gate
Which of the following is a linear component?
a) Diode
b) Transistor
c) Resistor
d) LED
What is the main purpose of a capacitor in a filter circuit?
a) To amplify signals
b) To store electrical energy
c) To block DC and pass AC
d) To smooth out fluctuations in voltage
Which device is used to convert light into electrical signals?
a) Diode
b) Phototransistor
c) Capacitor
d) Resistor
In digital electronics, what does a flip-flop do?
a) Stores binary data
b) Amplifies signals
c) Converts analog to digital signals
d) Filters noise
Which of the following is a characteristic of an ideal op-amp?
a) Infinite gain
b) Zero output impedance
c) Infinite input impedance
d) All of the above
The term “biasing” in a transistor circuit refers to:
a) Setting the operating point
b) Increasing signal gain
c) Reducing power consumption
d) Decreasing input resistance
Which of the following is an active electronic component?
a) Resistor
b) Inductor
c) Diode
d) Capacitor
In a digital logic circuit, what does a NOT gate do?
a) Outputs the inverse of the input
b) Outputs the sum of inputs
c) Outputs the product of inputs
d) Inverts the input signal
If you are interested to enhance your knowledge regarding Physics, Chemistry, Computer, and Biology please click on the link of each category, you will be redirected to dedicated website for each category.
