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 default VLAN ID for untagged traffic on most switches?
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Solution
The default VLAN ID for untagged traffic on most switches is VLAN 1.
Correct Answer:
A
— 1
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Q. What is the default VLAN on most switches?
A.
VLAN 1
B.
VLAN 10
C.
VLAN 100
D.
VLAN 0
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Solution
Most switches have VLAN 1 as the default VLAN, which is used for management and control traffic.
Correct Answer:
A
— VLAN 1
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Q. What is the depletion region in a semiconductor diode?
A.
Region of high conductivity
B.
Region of low conductivity
C.
Region of high temperature
D.
Region of high voltage
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Solution
The depletion region in a semiconductor diode is a region of low conductivity where no free charge carriers are present due to recombination.
Correct Answer:
B
— Region of low conductivity
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Q. What is the difference between a momentary switch and a latching switch?
A.
Momentary switches stay on until released, latching switches do not
B.
Latching switches stay on until released, momentary switches do not
C.
Both are the same
D.
Momentary switches are used for high power, latching switches are not
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Solution
A latching switch remains in its last position until manually changed, while a momentary switch only stays on while pressed.
Correct Answer:
B
— Latching switches stay on until released, momentary switches do not
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Q. What is the duty cycle of a 555 timer configured in astable mode?
A.
50%
B.
33%
C.
25%
D.
Depends on resistor values
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Solution
The duty cycle in astable mode depends on the resistor and capacitor values used in the circuit.
Correct Answer:
D
— Depends on resistor values
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Q. What is the effect of a 'shift left' operation on a binary number?
A.
It multiplies the number by 2
B.
It divides the number by 2
C.
It adds a zero to the end
D.
It reverses the number
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Solution
A 'shift left' operation on a binary number effectively multiplies the number by 2.
Correct Answer:
A
— It multiplies the number by 2
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Q. What is the effect of a left shift operation on a binary number?
A.
It multiplies the number by 2
B.
It divides the number by 2
C.
It adds 1 to the number
D.
It subtracts 1 from the number
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Solution
A left shift operation on a binary number effectively multiplies the number by 2.
Correct Answer:
A
— It multiplies the number by 2
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Q. What is the effect of adding a capacitor in parallel with a resistor?
A.
It increases the total resistance
B.
It decreases the total resistance
C.
It creates a short circuit
D.
It affects the time constant
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Solution
Adding a capacitor in parallel with a resistor affects the time constant of the circuit, as it introduces a reactive component.
Correct Answer:
D
— It affects the time constant
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Q. What is the effect of adding a FET in series with a load?
A.
It decreases the load resistance
B.
It increases the load current
C.
It controls the load current
D.
It short-circuits the load
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Solution
A FET can control the load current based on the gate voltage applied, allowing for variable control in series circuits.
Correct Answer:
C
— It controls the load current
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Q. What is the effect of capacitance on the time response of an RC circuit?
A.
Increases time constant
B.
Decreases time constant
C.
No effect
D.
Increases current
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Solution
Increasing capacitance in an RC circuit increases the time constant (τ = R*C), leading to a slower time response.
Correct Answer:
A
— Increases time constant
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Q. What is the effect of connecting a diode in parallel with a resistor?
A.
It increases the resistance
B.
It allows current to bypass the resistor
C.
It blocks all current
D.
It changes the voltage across the resistor
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Solution
Connecting a diode in parallel with a resistor allows current to bypass the resistor when the diode is forward-biased.
Correct Answer:
B
— It allows current to bypass the resistor
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Q. What is the effect of enabling PortFast on a switch port in STP?
A.
The port will never participate in STP
B.
The port transitions to the forwarding state immediately
C.
The port will block all traffic
D.
The port will only allow management traffic
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Solution
Enabling PortFast allows a switch port to transition to the forwarding state immediately, bypassing the listening and learning states.
Correct Answer:
B
— The port transitions to the forwarding state immediately
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Q. What is the effect of increasing capacitance in an RC circuit?
A.
Faster response
B.
Slower response
C.
No effect
D.
Increased voltage
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Solution
Increasing capacitance in an RC circuit results in a slower response due to a larger time constant.
Correct Answer:
B
— Slower response
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Q. What is the effect of increasing resistance in a circuit while keeping voltage constant according to Ohm's Law?
A.
Current increases
B.
Current decreases
C.
Voltage increases
D.
Power increases
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Solution
According to Ohm's Law, if resistance increases while voltage remains constant, the current will decrease.
Correct Answer:
B
— Current decreases
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Q. What is the effect of increasing the feedback resistor (Rf) in a non-inverting op-amp configuration?
A.
Increases the output voltage
B.
Decreases the output voltage
C.
Increases the gain
D.
Decreases the gain
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Solution
Increasing the feedback resistor (Rf) in a non-inverting op-amp configuration increases the gain.
Correct Answer:
C
— Increases the gain
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Q. What is the effect of increasing the frequency of an AC signal on a capacitor in a circuit?
A.
It blocks the signal
B.
It allows more current to pass
C.
It has no effect
D.
It increases the impedance
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Solution
As the frequency of an AC signal increases, a capacitor allows more current to pass due to its decreasing reactance.
Correct Answer:
B
— It allows more current to pass
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Q. What is the effect of increasing the frequency of an AC signal on a diode?
A.
Increases forward voltage drop
B.
Decreases reverse recovery time
C.
Increases reverse breakdown voltage
D.
Decreases forward current
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Solution
Increasing the frequency of an AC signal decreases the reverse recovery time of a diode, allowing it to switch faster.
Correct Answer:
B
— Decreases reverse recovery time
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Q. What is the effect of increasing the frequency on the reactance of a capacitor?
A.
Reactance increases
B.
Reactance decreases
C.
Reactance remains the same
D.
Reactance becomes infinite
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Solution
The reactance of a capacitor decreases with increasing frequency, allowing more AC current to pass.
Correct Answer:
B
— Reactance decreases
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Q. What is the effect of increasing the gate voltage in an n-channel FET?
A.
Decreases current
B.
Increases current
C.
No effect
D.
Reverses current direction
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Solution
Increasing the gate voltage in an n-channel FET enhances the channel conductivity, thus increasing the current.
Correct Answer:
B
— Increases current
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Q. What is the effect of increasing the load resistance on the power delivered to the load in a resistive circuit?
A.
Power increases
B.
Power decreases
C.
Power remains constant
D.
Power becomes zero
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Solution
Increasing the load resistance generally decreases the power delivered to the load, according to Ohm's law.
Correct Answer:
B
— Power decreases
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Q. What is the effect of increasing the number of turns in an inductor?
A.
Inductance decreases
B.
Inductance remains the same
C.
Inductance increases
D.
Inductance becomes zero
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Solution
Increasing the number of turns in an inductor increases its inductance.
Correct Answer:
C
— Inductance increases
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Q. What is the effect of increasing the number of turns in the primary winding of a transformer?
A.
Increases the output current
B.
Decreases the output voltage
C.
Increases the output voltage
D.
Has no effect on the output
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Solution
Increasing the number of turns in the primary winding increases the output voltage in a step-up transformer.
Correct Answer:
C
— Increases the output voltage
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Q. What is the effect of increasing the resistance in an RL circuit?
A.
Increases the current
B.
Decreases the current
C.
Has no effect on current
D.
Increases the voltage
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Solution
Increasing the resistance in an RL circuit decreases the current according to Ohm's law.
Correct Answer:
B
— Decreases the current
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Q. What is the effect of increasing the resistance in the timing circuit of an astable 555 timer?
A.
Increases the frequency
B.
Decreases the frequency
C.
No effect on frequency
D.
Increases the duty cycle
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Solution
Increasing the resistance in the timing circuit of an astable 555 timer decreases the frequency of the output waveform.
Correct Answer:
B
— Decreases the frequency
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Q. What is the effect of increasing the value of feedback resistor Rf in a non-inverting op-amp?
A.
Increases output voltage
B.
Decreases output voltage
C.
Increases input impedance
D.
Decreases input impedance
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Solution
Increasing Rf in a non-inverting op-amp configuration increases the output voltage.
Correct Answer:
A
— Increases output voltage
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Q. What is the effect of increasing the voltage across a capacitor?
A.
It decreases the capacitance
B.
It increases the stored charge
C.
It causes the capacitor to short circuit
D.
It has no effect
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Solution
Increasing the voltage across a capacitor increases the amount of charge stored, as capacitance is constant.
Correct Answer:
B
— It increases the stored charge
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Q. What is the effect of negative feedback in op-amp circuits?
A.
Increases gain
B.
Decreases gain and improves stability
C.
Increases distortion
D.
Eliminates noise completely
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Solution
Negative feedback decreases gain and improves stability in op-amp circuits, leading to better performance.
Correct Answer:
B
— Decreases gain and improves stability
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Q. What is the effect of temperature on semiconductor behavior in series-parallel circuits?
A.
Increases resistance
B.
Decreases resistance
C.
No effect on resistance
D.
Increases capacitance
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Solution
As temperature increases, the resistance of semiconductors typically decreases due to increased carrier mobility.
Correct Answer:
B
— Decreases resistance
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Q. What is the effect of temperature on the capacitance of a ceramic capacitor?
A.
Capacitance increases with temperature
B.
Capacitance decreases with temperature
C.
Capacitance remains unchanged
D.
Capacitance fluctuates randomly
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Solution
The capacitance of ceramic capacitors typically decreases with increasing temperature.
Correct Answer:
B
— Capacitance decreases with temperature
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Q. What is the efficiency of an ideal transformer?
A.
0%
B.
50%
C.
100%
D.
75%
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Solution
An ideal transformer has an efficiency of 100%, meaning no energy is lost.
Correct Answer:
C
— 100%
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