Technical MCQ & Objective Questions
In today's competitive educational landscape, mastering the "Technical" subject is crucial for students preparing for school and competitive exams. Practicing MCQs and objective questions not only enhances your understanding but also boosts your confidence in tackling important questions during exams. Engaging with practice questions helps solidify concepts, making it easier to score better in assessments.
What You Will Practise Here
Fundamental concepts of mechanics and thermodynamics
Key formulas related to electrical circuits and systems
Definitions of important technical terms and principles
Diagrams illustrating key technical processes and systems
Theory areas covering electronics and communication
Problem-solving techniques for technical applications
Analysis of case studies relevant to technical scenarios
Exam Relevance
The "Technical" subject is a significant component of various examinations, including CBSE, State Boards, NEET, and JEE. Questions often focus on applying theoretical knowledge to practical situations, with common patterns including multiple-choice questions that test both conceptual understanding and problem-solving skills. Familiarity with these patterns through practice can greatly enhance your exam performance.
Common Mistakes Students Make
Misinterpreting technical terms and definitions
Overlooking the importance of units and conversions in calculations
Failing to apply theoretical concepts to practical problems
Rushing through diagrams without understanding their significance
FAQs
Question: How can I improve my performance in Technical MCQs?Answer: Regular practice with objective questions and understanding the underlying concepts will significantly enhance your performance.
Question: Are there specific resources for Technical objective questions with answers?Answer: Yes, many educational platforms, including SoulShift, provide curated practice questions tailored for exam preparation.
Don't wait any longer! Start solving practice MCQs today to test your understanding and prepare effectively for your exams. Your success in mastering "Technical" concepts is just a question away!
Q. What is the energy band gap in a semiconductor?
A.
The energy required to free an electron
B.
The energy of the conduction band
C.
The energy of the valence band
D.
The energy lost in conduction
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Solution
The energy band gap is the energy required to free an electron from the valence band to the conduction band.
Correct Answer:
A
— The energy required to free an electron
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Q. What is the final voltage across a capacitor in an RC circuit after a long time?
A.
0V
B.
V0
C.
V0/2
D.
V0*e^(-t/RC)
Show solution
Solution
After a long time, the voltage across the capacitor in an RC circuit approaches the supply voltage V0.
Correct Answer:
B
— V0
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Q. What is the first usable IP address in the subnet 10.0.0.0/8?
A.
10.0.0.0
B.
10.0.0.1
C.
10.0.0.255
D.
10.255.255.255
Show solution
Solution
The first usable IP address in the subnet 10.0.0.0/8 is 10.0.0.1, as 10.0.0.0 is the network address.
Correct Answer:
B
— 10.0.0.1
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Q. What is the formula for calculating the total resistance in a series circuit?
A.
R_total = R1 + R2 + R3
B.
R_total = R1 x R2 x R3
C.
R_total = R1 / R2 / R3
D.
R_total = R1 - R2 - R3
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Solution
In a series circuit, the total resistance is the sum of all individual resistances, R_total = R1 + R2 + R3.
Correct Answer:
A
— R_total = R1 + R2 + R3
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Q. What is the formula for the time constant in an RL circuit?
A.
L/R
B.
R/L
C.
L+R
D.
R-L
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Solution
The time constant (τ) in an RL circuit is given by τ = L/R, where L is inductance and R is resistance.
Correct Answer:
A
— L/R
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Q. What is the formula for the time response of a first-order RC circuit to a step input?
A.
V(t) = V_final(1 - e^(-t/τ))
B.
V(t) = V_final(e^(-t/τ))
C.
V(t) = V_initial + (V_final - V_initial)(1 - e^(-t/τ))
D.
V(t) = V_initial + (V_final - V_initial)e^(-t/τ)
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Solution
The time response of a first-order RC circuit to a step input is given by V(t) = V_initial + (V_final - V_initial)(1 - e^(-t/τ)).
Correct Answer:
C
— V(t) = V_initial + (V_final - V_initial)(1 - e^(-t/τ))
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Q. What is the forward voltage drop of a typical silicon diode?
A.
0.2V
B.
0.7V
C.
1.2V
D.
0.5V
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Solution
A typical silicon diode has a forward voltage drop of approximately 0.7V when conducting.
Correct Answer:
B
— 0.7V
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Q. What is the function of a capacitor in a dynamic RAM (DRAM) cell?
A.
To amplify signals
B.
To store charge
C.
To switch states
D.
To rectify signals
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Solution
In a dynamic RAM (DRAM) cell, the capacitor is used to store charge, which represents the binary data.
Correct Answer:
B
— To store charge
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Q. What is the function of a common-emitter configuration in a BJT?
A.
To provide high input impedance
B.
To provide voltage gain
C.
To provide current gain only
D.
To act as a switch
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Solution
The common-emitter configuration provides voltage gain, making it a popular choice for amplification.
Correct Answer:
B
— To provide voltage gain
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Q. What is the function of a coupling capacitor in an amplifier circuit?
A.
To block DC and allow AC signals
B.
To amplify the signal
C.
To provide feedback
D.
To stabilize the power supply
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Solution
Coupling capacitors are used to block DC components while allowing AC signals to pass through, facilitating signal transfer between stages.
Correct Answer:
A
— To block DC and allow AC signals
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Q. What is the function of a decoder in combinational logic?
A.
To encode data
B.
To convert binary to decimal
C.
To select a specific output line
D.
To perform addition
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Solution
A decoder converts binary input into a unique output line, effectively selecting one of many outputs based on the input combination.
Correct Answer:
C
— To select a specific output line
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Q. What is the function of a decoder in digital logic?
A.
To convert binary data to decimal
B.
To select a specific output line based on input
C.
To perform addition of binary numbers
D.
To store data temporarily
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Solution
A decoder takes binary input and activates one specific output line corresponding to the input value.
Correct Answer:
B
— To select a specific output line based on input
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Q. What is the function of a firewall?
A.
To speed up internet connection
B.
To protect against unauthorized access
C.
To store data securely
D.
To manage network traffic
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Solution
A firewall is a security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.
Correct Answer:
B
— To protect against unauthorized access
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Q. What is the function of a multiplexer?
A.
To amplify signals
B.
To select one of many inputs and forward it to a single output
C.
To perform binary addition
D.
To store data temporarily
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Solution
A multiplexer selects one of several input signals and forwards the selected input into a single line.
Correct Answer:
B
— To select one of many inputs and forward it to a single output
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Q. What is the function of a NOT gate?
A.
Inverts the input
B.
Outputs the same input
C.
Combines inputs
D.
None of the above
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Solution
A NOT gate inverts its input; if the input is 1, the output is 0, and vice versa.
Correct Answer:
A
— Inverts the input
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Q. What is the function of a peak detector circuit using an op-amp?
A.
To measure average voltage
B.
To store the peak value of an input signal
C.
To filter out AC components
D.
To amplify low-level signals
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Solution
A peak detector circuit stores the peak value of an input signal, allowing for measurement of maximum signal levels.
Correct Answer:
B
— To store the peak value of an input signal
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Q. What is the function of a pull-up resistor in a switch circuit?
A.
To increase current
B.
To ensure a defined logic level when the switch is open
C.
To decrease voltage
D.
To store charge
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Solution
A pull-up resistor ensures that a defined logic level (high) is present when the switch is open.
Correct Answer:
B
— To ensure a defined logic level when the switch is open
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Q. What is the function of a rectifier in an AC circuit?
A.
To increase voltage
B.
To convert AC to DC
C.
To decrease voltage
D.
To filter signals
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Solution
Rectifiers convert alternating current (AC) into direct current (DC) by allowing current to flow in one direction.
Correct Answer:
B
— To convert AC to DC
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Q. What is the function of a rectifier in power supply circuits?
A.
To increase voltage
B.
To convert AC to DC
C.
To filter noise
D.
To amplify signals
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Solution
The primary function of a rectifier is to convert alternating current (AC) to direct current (DC).
Correct Answer:
B
— To convert AC to DC
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Q. What is the function of a sample-and-hold circuit in an ADC?
A.
To amplify the input signal
B.
To convert the signal to digital
C.
To maintain a constant voltage level during conversion
D.
To filter out noise
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Solution
A sample-and-hold circuit captures and holds the input voltage constant during the analog-to-digital conversion process.
Correct Answer:
C
— To maintain a constant voltage level during conversion
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Q. What is the function of a Schmitt trigger in op-amp circuits?
A.
To amplify weak signals
B.
To provide hysteresis in signal switching
C.
To filter out high-frequency noise
D.
To integrate input signals
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Solution
A Schmitt trigger provides hysteresis in signal switching, which helps to eliminate noise and provide clean transitions between high and low states.
Correct Answer:
B
— To provide hysteresis in signal switching
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Q. What is the function of a Schmitt trigger?
A.
To amplify weak signals
B.
To provide hysteresis in signal processing
C.
To rectify AC signals
D.
To store binary data
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Solution
A Schmitt trigger is used to provide hysteresis in signal processing, ensuring clean transitions between high and low states.
Correct Answer:
B
— To provide hysteresis in signal processing
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Q. What is the function of a small-signal model in electronics?
A.
To analyze large signal behavior
B.
To simplify the analysis of linear circuits
C.
To design power amplifiers
D.
To measure frequency response
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Solution
Small-signal models are used to simplify the analysis of linear circuits by approximating the behavior around a bias point.
Correct Answer:
B
— To simplify the analysis of linear circuits
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Q. What is the function of a testbench in HDL?
A.
To synthesize the design
B.
To simulate the design
C.
To implement the design
D.
To document the design
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Solution
A testbench is used to simulate the design and verify its functionality by applying test inputs and observing outputs.
Correct Answer:
B
— To simulate the design
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Q. What is the function of a VLAN Access Control List (VACL)?
A.
To filter traffic between VLANs
B.
To manage VLAN configurations
C.
To monitor VLAN performance
D.
To assign VLANs to ports
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Solution
A VLAN Access Control List (VACL) is used to filter traffic between VLANs, providing a way to enforce security policies.
Correct Answer:
A
— To filter traffic between VLANs
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Q. What is the function of a VPN in network security?
A.
To increase bandwidth
B.
To create a secure connection over a public network
C.
To manage network devices
D.
To monitor network traffic
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Solution
A VPN (Virtual Private Network) creates a secure connection over a public network, ensuring privacy and security.
Correct Answer:
B
— To create a secure connection over a public network
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Q. What is the function of a Zener diode?
A.
To rectify AC signals
B.
To allow current to flow in one direction only
C.
To provide voltage regulation
D.
To amplify signals
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Solution
A Zener diode is used for voltage regulation by allowing current to flow in the reverse direction when a specific voltage is reached.
Correct Answer:
C
— To provide voltage regulation
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Q. What is the function of an operating system?
A.
To manage hardware and software resources
B.
To provide internet access
C.
To run applications only
D.
To store data permanently
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Solution
An operating system manages hardware and software resources and provides a user interface.
Correct Answer:
A
— To manage hardware and software resources
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Q. What is the function of an operational amplifier (op-amp) in a circuit?
A.
To rectify AC signals
B.
To amplify voltage signals
C.
To switch currents
D.
To store charge
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Solution
An op-amp is primarily used to amplify voltage signals in various applications.
Correct Answer:
B
— To amplify voltage signals
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Q. What is the function of an operational amplifier (op-amp) in a feedback configuration?
A.
To increase the input voltage
B.
To stabilize the output voltage
C.
To amplify the difference between two input voltages
D.
To convert AC signals to DC
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Solution
An op-amp amplifies the difference between its inverting and non-inverting inputs in a feedback configuration.
Correct Answer:
C
— To amplify the difference between two input voltages
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