DGCA Module 03 - All Exam Materials

DGCA Module 03 Electrical Fundamentals (Test 1) is the basic principles of electricity used in aircraft systems. It covered electric charges, voltage, current, resistance and the simple laws that control how electricity flows. Students will learn how the meaning of AC, DC, power, energy and how these basic ideas support electrical operation in an aircraft.

This test is includes questions on Ohm’s law, series circuits, parallel circuits, batteries, generators, alternators and basic measuring instruments. It also explains the working of fuses, switches, relays and the main parts of aircraft electrical supply. Students understand how electrical components work together and how stable power is maintained in all conditions.

This test papers develops knowledge of wiring diagrams, bonding, earthing, electrical protection, fault finding and safe working practices needed for reliable aircraft electrical performance. The test is useful for students to practise for DGCA Module 03 and build a clear understanding of electrical fundamentals and basic aircraft power systems.

DGCA Module 03 Quiz Questions - Test 1

1 / 52

The characteristics of conductors and insulators is.

Conductor

Semiconductor

Insulator

All

2 / 52

Neutrons have.

The opposite charge to an electron but half the weight of a proton

The same charge as an electron but half the mass

No electrical charge but will add weight to the nucleus

3 / 52

Power =

Energy/Time

Energy/Distance

Time/Distance

4 / 52

A shunt is used with.

An ohmmeter

An ammeter

A voltmeter

5 / 52

If a load in series has a current passing through it, the magnetic field can be worked out by using.

Left hand rule

Right hand rule

Corkscrew rule

6 / 52

The unit for power is.

Joules per second

Volts/Amps

N/m

7 / 52

In conventional flow, the left hand rule applies to.

Motors

Batteries

Generators

8 / 52

When a conductor is cut by magnetic lines of force an EMF is induced. This is.

Lens law

Kirchoffs law

Farade law

9 / 52

The basis for transformer operation in the use of alternating current is mutual.

Inductance

Capacitance

Reactance

10 / 52

When two coils are linked by a common flux, a voltage can be induced in one by a changing current in the other. This process is known as.

The magnetic effect

Self induction

Mutual induction

11 / 52

When an electrical supply becomes 'open-circuit'.

The fuse or circuit breaker should isolate the circuit due to the increased current drawn

The loss of continuity will prevent its component from functioning

The component will operate normally but will not switch off

12 / 52

The S.I. unit of magnetic flux density is the.

Tesla

Henry

Weber

13 / 52

A 1µF capacitor is equivalent to.

1.000,001 Farads

0.000,001 Farads

0.001 Farads

14 / 52

Electromotive force is measured in.

Ohm's

Volts

Watts

15 / 52

Voltage is measured in.

Ohm's

Volts

Watts

16 / 52

Potential difference is measured in.

Ohm's

Volts

Watts

17 / 52

Electrical pressure is measured in.

Ohm's

Watts

Volts

18 / 52

Kirchhoff's law states.

The algebraic sum of all the voltages entering or leaving a series of components will be equal to zero

The inverse sum of all the voltages entering or leaving a series of components will be equal to one

The algebraic sum of all the currents entering or leaving a series of components will be equal to one

19 / 52

When an atom gains electrons, this results in.

Nagetive

Positive

No charge

20 / 52

When an atom loses electrons, this results in.

Positive

Negetive

No charge

21 / 52

A negatively charged ion is called a.

Cation

Anion

Elements

22 / 52

A positively charged ion is called a

Cation

Anion

Elements

23 / 52

What is 3.25 volts in millivolts.

32500 millivolts

3250 millivolts

325 millivolts

24 / 52

What is the maximum number of electrons in shell N of an atom.

25 / 52

The mass number of an element is.

The number of electrons and protons

The number of neutrons and protons

The number of neutrons and electrons

26 / 52

What is the atomic number of an element.

The number of electrons in an atom

The number of protons in an atom

The number of neutrons in an atom

27 / 52

An atom or a molecule that has gained or lost one or more electrons is called.

Ion

Current

Molecules

28 / 52

The process by which an atom loses or gains electrons is.

Anion

Ionisation

Ohm's law

29 / 52

The valence electron is.

The electron in inner shell of atom

The electron in outer shell of atom

A positive electron

30 / 52

The electrons which are not attached to the nucleus of an atom and free to move when external energy is applied are called.

Free electrons

Valence electrons

Ion

All

31 / 52

What is the maximum number of electrons in shell K of an atom.

32 / 52

What is the maximum number of electrons in shell L of an atom.

33 / 52

What is the maximum number of electrons in shell M of an atom.

34 / 52

A coulomb is.

One ampere * second

One second per ampere

One ampere per second

35 / 52

An electric current is a flow of.

Electrons from a positively charged area to a negatively charged area

Electrons from a negatively charged area to a positively charged area

Protons from a positively charged area to a negatively charged area

36 / 52

Atoms are composed of three subatomic particles. These three subatomic particles are.

Conductors, insulators, semiconductors

Protons, Electrons, Conductors

Protons, Neutrons, Electrons

37 / 52

Charge on protons is.

Positively charge

Negatively charge

No charge

38 / 52

Charge on Electrons is.

Positively charge

Negatively charge

No charge

39 / 52

The term that describes the combined resistive forces in an AC circuit is.

Resistance

Total resistance

Impedance

40 / 52

Ohm's law states that.

E.m.f. = Current divided by resistance

Current = E.m.f. divided by resistance

Resistance = Current divided by e.m.f.

41 / 52

In conventional current flow, what is Fleming's right hand rule used for.

Generator

Motors

Inductors

42 / 52

The SI unit of work is.

Kilogram metres force

Joules per second

Joules per second (Watts)

43 / 52

The SI unit of work is.

Kilogram metres force

Joules

Newton metres

All

44 / 52

The smallest particle of matter that can exist and still retain its identity.

Elements

Compounds

Matter

Molecules

45 / 52

Which is considered to be the most basic building block of all matter.

Elements

Compounds

Matter

Atom

46 / 52

If a photon radiating into an electronic device causes the production of an electron/hole pair, the device is known as a.

Light emitting diode

Laser diode

Photodiode

47 / 52

Faraday's Law States that.

The magnitude of the EMF is indirectly proportional to the rate of change of flux

The magnitude of the EMF is directly proportional to the magnetic flux

The magnitude of the EMF is directly proportional to the rate of change of flux

48 / 52

Which of the following is 1 Amp.

100 mA

1000 mA

1000 kA

49 / 52

An electric current is.

An excitement of electrons in a metal

A surplus of free electron

An ordered flow of electrons

50 / 52

........ can be defined as anything that has mass and has volume and is the substance of which physical objects are composed.

Elements

Compounds

Matter

None of the above

51 / 52

A substance that cannot be reduced to a simpler form by chemical means.

Elements

Compounds

Matter

None of the above

52 / 52

A chemical combination of two or more elements is.

Elements

Compounds

Matter

None of the above

Your score is

The average score is 64%

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The characteristics of conductors and insulators is.

Neutrons have.

A shunt is used with.

If a load in series has a current passing through it, the magnetic field can be worked out by using.

The unit for power is.

In conventional flow, the left hand rule applies to.

When a conductor is cut by magnetic lines of force an EMF is induced. This is.

The basis for transformer operation in the use of alternating current is mutual.

When two coils are linked by a common flux, a voltage can be induced in one by a changing current in the other. This process is known as.

When an electrical supply becomes 'open-circuit'.

The S.I. unit of magnetic flux density is the.

A 1µF capacitor is equivalent to.

Electromotive force is measured in.

Potential difference is measured in.

Electrical pressure is measured in.

Kirchhoff's law states.

When an atom gains electrons, this results in.

When an atom loses electrons, this results in.

A negatively charged ion is called a.

A positively charged ion is called a

What is 3.25 volts in millivolts.

What is the maximum number of electrons in shell N of an atom.

The mass number of an element is.

What is the atomic number of an element.

An atom or a molecule that has gained or lost one or more electrons is called.

The process by which an atom loses or gains electrons is.

The valence electron is.

The electrons which are not attached to the nucleus of an atom and free to move when external energy is applied are called.

What is the maximum number of electrons in shell K of an atom.

What is the maximum number of electrons in shell L of an atom.

What is the maximum number of electrons in shell M of an atom.

A coulomb is.

An electric current is a flow of.

Atoms are composed of three subatomic particles. These three subatomic particles are.

Charge on protons is.

Charge on Electrons is.

The term that describes the combined resistive forces in an AC circuit is.

Ohm's law states that.

In conventional current flow, what is Fleming's right hand rule used for.

The SI unit of work is.

The SI unit of work is.

The smallest particle of matter that can exist and still retain its identity.

Which is considered to be the most basic building block of all matter.

If a photon radiating into an electronic device causes the production of an electron/hole pair, the device is known as a.

Faraday's Law States that.

Which of the following is 1 Amp.

An electric current is.

........ can be defined as anything that has mass and has volume and is the substance of which physical objects are composed.

A chemical combination of two or more elements is.

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