PMS · PMS · 2026
Solved PMS 2026 GK practice set on electrical machines and circuit terms — motor vs generator, transformer, inductor, commutator, EMF, electromagnetic induction — with verified answers and explanations. A Sir Adnan practice set, not an official past paper.
Paper Snapshot
Questions
30
Time
30
Minutes
Subjects
1
Topics
1
Read mode shows correct answers. Attempt mode hides answers, starts timer, and shows your result after submission.
About this paper
Sir Adnan's 'PMS GENERAL SCIENCE 2026 (GK)' booklet (3 pp, header 'MCQs (PPSC/FPSC NEW TREND 2025-26)') from the monster-data 'PMS SCREENING 2026 GK UPDATED' pack. All 30 printed items published (0 dropped, 0 corrections); one NOTE flag on the armature item, whose rotating-armature picture is the school/DC-machine case while large alternators often carry a stationary armature.
Paper Controls
Subject 1
Topic Section
30 solved MCQs shown directly below
Correct Answer: Motor
A motor converts electrical energy into mechanical energy — the reverse of a generator.
Correct Answer: Generator
A generator converts mechanical energy (from a turbine, engine or hand crank) into electrical energy.
Correct Answer: Transformer
A transformer changes AC voltage from one level to another through electromagnetic induction, without changing the frequency.
Correct Answer: Coil
A coil is a conductor wound in loops; current through it creates a magnetic field and gives it inductance.
Correct Answer: Inductor
An inductor is a coil that stores energy in the magnetic field set up when current flows through it.
Correct Answer: Electric Circuit
An electric circuit is a closed path through which electric current flows.
Correct Answer: Alternator
An alternator is a generator that produces alternating current.
Correct Answer: Rectifier
A rectifier converts alternating current (AC) into direct current (DC).
Correct Answer: Armature
The armature is the winding part of a motor or generator that carries current.
Correct Answer: Stator
The stator is the stationary part of a motor or generator; its field system produces the magnetic flux.
Correct Answer: Electromagnet
An electromagnet is a magnet created by electric current flowing through a coil; its magnetism vanishes when the current stops.
Correct Answer: Rotor
The rotor is the rotating component of an electric motor or generator.
Correct Answer: Electromotive Force (EMF)
Electromotive force (EMF) is the voltage generated by a source, or by electromagnetic induction in a conductor.
Correct Answer: Induction Motor
In an induction motor, the stator's rotating magnetic field induces current in the rotor, which then turns.
Correct Answer: Step-up Transformer
A step-up transformer has more turns on its secondary coil than on its primary, so it increases the voltage.
Correct Answer: Step-down Transformer
A step-down transformer has fewer turns on its secondary coil than on its primary, so it decreases the voltage.
Correct Answer: Core
The core is the magnetic material (usually laminated iron) inside a transformer or motor that guides the magnetic flux.
Correct Answer: Brushes
Brushes are conducting contacts that carry current between the stationary and rotating parts of a motor or generator.
Correct Answer: Slip Rings
Slip rings are rings on the rotor that transfer current to or from a rotating part in AC machines.
Correct Answer: Commutator
The commutator is the split-ring device in DC motors and generators that reverses the current direction in the coil each half-turn.
Correct Answer: Field Winding
The field winding is the coil that produces the magnetic field in a motor or generator.
Correct Answer: Load
A load is any device or component — a lamp, a heater, a motor — that consumes electrical energy in a circuit.
Correct Answer: Voltage
Voltage is the electrical potential difference between two points, measured in volts.
Correct Answer: Current
Current is the flow of electric charge in a conductor, measured in amperes.
Correct Answer: Resistance
Resistance is the opposition to the flow of current in a conductor, measured in ohms.
Correct Answer: Inductance
Inductance is the property of a coil by which it opposes any change in the current through it.
Correct Answer: AC (Alternating Current)
Alternating current (AC) is electric current that reverses direction periodically — 50 times a second each way in Pakistan's mains supply.
Correct Answer: DC (Direct Current)
Direct current (DC) is electric current that flows in one direction only, as from a battery.
Correct Answer: Magnetic Flux
Magnetic flux is the total magnetic field passing through a surface, measured in webers.
Correct Answer: Electromagnetic Induction
Electromagnetic induction is the process of generating voltage in a conductor by a changing magnetic field — Faraday's law, the basis of generators and transformers.
Source & verification
Built by GK360 from verified bank questions — every answer rechecked before publishing. Where the source printed no options, the answer options were prepared by GK360; the questions and correct answers are the verified originals.
Questions
No. It is Sir Adnan's 'PMS GENERAL SCIENCE 2026 (GK)' terminology booklet from the monster-data 'PMS SCREENING 2026 GK UPDATED' pack, published as paperType 'practice', never as a past paper. The year 2026 is the booklet's label, not a claimed exam session.
A motor converts electrical energy into mechanical energy; a generator does the reverse, converting mechanical energy into electrical energy.
A transformer changes AC voltage from one level to another without changing the frequency.
Yes — all 30 term-definition items are standard electrical-engineering definitions, so none was dropped; the only flag is a note on the armature item.
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