Physics Model Past Paper 2022 PDF
Part – 1 English
Which of the following is an example of alliteration?
Answer: She sells seashells by the seashore.
Change the narration: The master said to the servant, “Bring a new flower today.”
Answer: The master ordered the servant to bring him a new flower that day.
Do you like sailing on the lake? Here ‘sailing on the lake’ is?
Answer: Gerund phrase
The Antonym of Vanity is?
Answer: Modesty
Choose the correct coordinate conjunction?
Answer: Or
The Synonym of Amnesty is?
Answer: Forgiveness
Hush! do not disturb me. Here ‘hush!’ is?
Answer: Interjection
A/an ______ sentence issues commands, requests or instructions.
Answer: Imperative
You sit on a throne of lies. The given sentence is an example of _____?
Answer: Metaphor
Choose the correct indirect speech: “Please wait here till I return”, she told him.
Answer: She requested him to wait till she returned.
Do you have ____ broom? I dropped ____ piece of cake and I need to clean it up.
Answer: A/a
Could you tell me where ____?
Answer: The cinema is
Choose the correct passive voice of the sentence: “Who taught you such things?”
Answer: By whom were you taught such things?
He is getting out _____ the car.
Answer: Of
What punctuation mark is generally used before certain coordinating conjunctions?
Answer: Comma
Change into indirect: He said to me “Do you like rice”?
Answer: He asked me if I liked rice.
He is junior _____ me?
Answer: To
The Antonym for BOLD is?
Answer: Timid
Mark the Correct spelling: Grammar, Grammer, Gramar, Grammaer
Answer: Grammar
The Synonym of Imply is?
Answer: Suggest
The secret of visit to his aunt was know by few. Here ‘few’ is?
Answer: Indefinite pronoun
Change from Active to Passive voice: “A doctor wrote the book.”
Answer: The book was written by a doctor.
Choose the correct voice: She was motivating her friends.
Answer: Her friends were being motivated by her.
There were __________ people in the mall, so we weren’t completely alone.
Answer: A few
Choose the correct sentence out of the four sentences given below. He is the tallest boy in the school.
Answer: He is the tallest boy in the school.
She can return tonight. Here ‘can’ is?
Answer: Modal verb
Part-I: Teaching Methodology
The summative evaluation is ______?
Answer: Certifying Judgement
The analysis of items is necessary in _____?
Answer: Standardized Test
Students are passive in ______?
Answer: Lecture method
Procedures used to determine person’s abilities is ______?
Answer: Maximum performance test
The tests designed to predict future performance is ______?
Answer: Aptitude Test
Function of educational administration and management is ____?
Answer: Both A and B(Instructional task & Non-Instructional task)
General guidance and counseling process is divided in ______ phases.
Answer: 5
Case Study is the technique that is used for ______?
Answer: Both A and B (Guiding and counselling)
Selecting one course of action among various alternatives is _____?
Answer: Decision Making
Test item is acceptable when facility index ranges from ______?
Answer: 30-70%
Cause and effect relationship is established in ______?
Answer: Experimental Research
Who is known as father of Scientific Management?
Answer: FW Taylor
Effectiveness of curriculum is determined by _____?
Answer: Evaluation
Practice is made in ______?
Answer: Drill method
Making judgment about an idea using external evidences is at level _____?
Answer: Evaluation
Responsible for setting standards for appointments in public sector?
Answer: Public service commission
As compared with other professions, the greater lack in teaching is ______?
Answer: Proper social outlook
Execution of plans and divisions is the part of ______?
Answer:
Which type of questions are difficult to mark with reliability?
Answer: Unstructured essays
Process of directing others towards some objectives is _____?
Answer: Leadership
Main purpose of the supervision of teaching should be the?
Answer: Advancement of pupil welfare
Administration means?
Answer: To look after
Which one is not the component of the curriculum?
Answer: Design
Which is conscious effort to assist in intellectual growth?
Answer: Guidance
First Educational Conference in Pakistan held from _____ to _____?
Answer: 27th November 1947 to 1st December 1947
Part – II Physics
The response of RLC circuit is ______ when the roots of the circuit’s characteristic equation are equal and real.
Answer: Critically damped
A capacitor is a passive element designed to store energy in its ______?
Answer: Electric field
Which protection scheme is most suitable for detecting evolving faults in a transmission system?
Answer: Traveling wave-based protection
In thermal power plants, what is the primary reason for using a condenser in the Rankine cycle?
Answer: To condense exhaust steam into liquid for reuse in the cycle
In a frequency modulation (FM) system, what parameter of the carrier wave is varied according to the message signal?
Answer: Frequency
Which of the following controllers provides both transient and steady-state improvements in a control system?
Answer: PID controller
Which of the following methods is commonly used for analyzing the stability of a nonlinear control system?
Answer: Lyapunov’s direct method
Which technology in a smart grid enhances grid stability by providing real-time measurement of voltage and current phase angles?
Answer: Phasor Measurement Unit (PMU)
In a smart grid, which technology enables real-time monitoring and two-way communication between utilities and consumers?
Answer: Advanced Metering Infrastructure (AMI)
Which power electronic converter is used to convert DC voltage from one level to another without changing polarity?
Answer: Chopper
Which switching device is best suited for high-frequency power electronics applications due to its fast switching speed and low conduction losses?
Answer: MOSFET
In power electronics, what is the main advantage of using a resonant converter over a conventional PWM converter?
Answer: It allows zero-voltage or zero-current switching
In digital signal processing, which filter design technique is commonly used to convert an analog filter into a digital filter while preserving frequency response characteristics?
Answer: Bilinear transformation
In digital signal processing, what is the primary advantage of using a window function in Fourier analysis?
Answer: To reduce spectral leakage
In power system analysis, what is the primary reason for using symmetrical components in fault analysis?
Answer: To simplify the analysis of unbalanced faults
In power system analysis, what is the main purpose of conducting a load flow study?
Answer: To determine voltage levels, power flows, and losses in the network under steady-state conditions
In power system analysis, what is the primary advantage of using per-unit (PU) system calculations?
Answer: It normalizes system values
In a power distribution system, why are ring main units (RMUs) preferred in urban networks?
Answer: They provide multiple power supply paths
In underground power distribution systems, why is XLPE (cross-linked polyethylene) insulation preferred over paper-insulated cables?
Answer: XLPE has a higher thermal resistance
In a separately excited DC motor, how does an increase in armature voltage affect its speed when the field current is kept constant?
Answer: The speed increases due to a higher induced back EMF
In an amplitude modulation (AM) system, what is the main disadvantage of using a high modulation index greater than 1?
Answer: It causes overmodulation
A DC circuit containing multiple resistors and voltage sources, how can the node voltages be determined systematically?
Answer: By applying Kirchhoff’s Current Law (KCL)
Why are static VAR compensators (SVGs) used in power transmission systems?
Answer: To provide dynamic voltage support and reactive power compensation
Why is a bundled conductor configuration used in high-voltage transmission lines?
Answer: To reduce corona discharge and minimize power losses
In a power system, what is the primary advantage of using a numerical relay over an electromechanical relay?
Answer: It provides faster and more accurate fault detection
What is the primary purpose of a busbar protection scheme in a power system?
Answer: To protect the busbar from faults by isolating faulty sections
In a power system, why is a directional relay used for transmission line protection?
Answer: To differentiate between forward and reverse fault currents
In a hydroelectric power plant, what is the main factor that determines the power output?
Answer: The height of the water head and flow rate
Which factor primarily determines the efficiency of a thermal power plant?
Answer: The temperature difference between the heat source and the sink
In state-space analysis, which condition must be satisfied for a system to be completely controllable?
Answer: The rank of the controllability matrix must be equal to the number of state variables
Which communication technology is most commonly used for real-time data exchange in smart grids?
Answer: Power line communication (PLC)
How does demand response improve the efficiency of a smart grid?
Answer: By allowing consumers to adjust their energy usage based on grid conditions
What is the primary reason for using a squirrel-cage rotor in an induction motor?
Answer: Lower maintenance
Why are higher transmission voltages used in power distribution systems?
Answer: To reduce transmission losses
In a unity feedback control system, what does the steady-state error depend on?
Answer: System type and input signal
Which type of controller combines the advantages of proportional and integral control to eliminate steady-state error and improve response time?
Answer: Proportional-integral controller (PI)
In a buck converter, what happens to the output voltage if the duty cycle is increased (while input voltage remains constant)?
Answer: Output voltage increases
Which device is used to protect transmission lines from lightning strikes?
Answer: Surge arrester
Which protection scheme uses current comparison at both ends of a transmission line?
Answer: Pilot wire protection
What is the purpose of carbon brushes in a DC machine?
Answer: To provide electrical contact with the commutator
Which type of DC machine is commonly used for constant speed applications?
Answer: Shunt DC motor
What is the main function of a commutator in a DC motor?
Answer: To reverse current direction in armature coils
Which component is essential for demodulating an amplitude-modulated (AM) signal?
Answer: Envelope detector
Which type of modulation is used in AM radio broadcasting?
Answer: Amplitude modulation
In Pakistan, what is the standard frequency of alternating current (AC) used in most power distribution systems?
Answer: 50 Hz
Which type of power distribution system is commonly used for residential areas?
Answer: Radial system
Which voltage level is typically used for long-distance power transmission?
Answer: 400 kV & above
Which mathematical tool is commonly used to analyze signals in digital signal processing?
Answer: Fourier transform
What is the main purpose of a feedback loop in control systems?
Answer: To compare output with desired input
Which energy source is most used for electricity generation worldwide?
Answer: Coal
