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Construction and Electrical Technology MCQs

Total questions: 150

Worksheet time: 13hrs 30mins

Name
Class
Date
1.

Which field focuses on the design and construction of buildings and infrastructure?

a)

Electrical Technology

b)

Mechanical Technology

c)

Civil Technology

d)

Automotive Technology

2.

Which material is commonly used for structural framing in buildings?

a)

Plastic

b)

Steel

c)

Rubber

d)

Glass

3.

PPE stands for:

a)

Personal Protection Equipment

b)

Personal Protective Equipment

c)

Public Protective Equipment

d)

Personal Power Equipment

4.

Which tool is used to strip insulation from electrical wires?

a)

Hammer

b)

Screwdriver

c)

Wire stripper

d)

Pliers

5.

Which unit measures electrical current?

a)

Volt

b)

Watt

c)

Ohm

d)

Ampere

6.

What law states that V = IR?

a)

Kirchhoff’s Law

b)

Watt’s Law

c)

Ohm’s Law

d)

Coulomb’s Law

7.

Which electrical symbol represents a resistor?

a)

Circle

b)

Zigzag line

c)

Triangle

d)

Square

8.

Which type of circuit has only one path for current?

a)

Parallel

b)

Series

c)

Compound

d)

Open

9.

Which device protects circuits from overcurrent?

a)

Switch

b)

Outlet

c)

Fuse

d)

Lamp

10.

What material is commonly used in concrete reinforcement?

a)

Aluminum

b)

Copper

c)

Steel

d)

Plastic

11.

Which tool is used to measure voltage?

a)

Clamp

b)

Ammeter

c)

Multimeter

d)

Tester light

12.

What does grounding protect against?

a)

Fire only

b)

Electrical shock

c)

Noise

d)

Heat

13.

A blueprint is mainly used to:

a)

Decorate a building

b)

Show construction plans

c)

Advertise projects

d)

List materials only

14.

Which electrical code ensures safety and standard compliance?

a)

PEC

b)

ISBN

c)

ISO

d)

OSHA

15.

Which is a basic carpentry tool?

a)

Voltmeter

b)

Multimeter

c)

Hammer

d)

Oscilloscope

16.

What material is best suited for wiring?

a)

Steel

b)

Copper

c)

Concrete

d)

Rubber

17.

Which drawing shows wiring connections using symbols?

a)

Floor plan

b)

Blueprint

c)

Schematic diagram

d)

Perspective drawing

18.

Which factor affects electrical resistance?

a)

Color

b)

Length of wire

c)

Shape

d)

Brightness

19.

Why is PPE important in construction work?

a)

To save time

b)

To reduce material cost

c)

To prevent accidents

d)

To increase profit

20.

Why are circuit breakers used instead of fuses in houses?

a)

They are cheaper

b)

They are reusable

c)

They are decorative

d)

They increase voltage

21.

What happens to current if resistance increases (constant voltage)?

a)

Increases

b)

Decreases

c)

Remains same

d)

Stops

22.

Why is grounding important in electrical installations?

a)

To increase power

b)

To stabilize voltage

c)

To protect users from shock

d)

To improve lighting

23.

Why are blueprints essential before construction starts?

a)

To decorate walls

b)

To guide construction accurately

c)

To list tools

d)

To estimate wages only

24.

Why is concrete strong in compression but weak in tension?

a)

Its chemical content

b)

Its brittleness

c)

Lack of flexibility

d)

All of the above

25.

Why should tools be inspected before use?

a)

To save electricity

b)

To reduce noise

c)

To ensure safety

d)

To increase speed

26.

What is the purpose of electrical symbols?

a)

Decoration

b)

Identification and standardization

c)

Advertising

d)

Cost estimation

27.

Why should wires not be overloaded?

a)

To save materials

b)

To prevent overheating

c)

To increase brightness

d)

To reduce resistance

28.

Why are parallel circuits used in homes?

a)

Same current flows

b)

Appliances work independently

c)

Less wiring is used

d)

Voltage decreases

29.

Why is documentation important in projects?

a)

For grading only

b)

For legal compliance

c)

For reference and evaluation

d)

All of the above

30.

Why should wet hands not touch electrical devices?

a)

It causes noise

b)

It lowers resistance

c)

It increases shock risk

d)

It wastes energy

31.

Why are circuit diagrams preferred over pictures?

a)

They are colorful

b)

They use symbols

c)

They are cheaper

d)

They are artistic

32.

Why must electrical installations follow codes?

a)

For uniform appearance

b)

For safety and legality

c)

For profit

d)

For design only

33.

Why is planning important in construction projects?

a)

To delay work

b)

To waste materials

c)

To ensure efficiency

d)

To increase labor

34.

Why should students learn basic wiring?

a)

For decoration

b)

For awareness and safety

c)

For selling materials

d)

For memorization

35.

Why are hand tools still important despite machines?

a)

They are cheaper

b)

They are precise

c)

They are flexible

d)

All of the above

36.

Why is sustainability important in material selection?

a)

To reduce waste

b)

To protect environment

c)

To save resources

d)

All of the above

37.

A 12V circuit has a resistance of 6Ω6\Omega . What is the current?

a)

1 A1\text{ A}

b)

2 A2\text{ A}

c)

3 A3\text{ A}

d)

6 A6\text{ A}

38.

If one bulb fails in a series circuit, what happens?

a)

Others stay on

b)

Circuit stops

c)

Voltage increases

d)

Resistance decreases

39.

A wire overheats in a circuit. What is the most likely cause?

a)

Low voltage

b)

High resistance

c)

Overloading

d)

Grounding

40.

A construction worker lifts heavy loads without PPE. What risk is highest?

a)

Noise pollution

b)

Electrical shock

c)

Physical injury

d)

Fire hazard

41.

Which wiring method is safest for homes?

a)

Temporary wiring

b)

Exposed wiring

c)

Concealed wiring

d)

Improvised wiring

42.

A multimeter reads zero voltage across a load. What is likely wrong?

a)

Circuit is open

b)

Resistance is low

c)

Power is high

d)

Wire is grounded

43.

What happens when appliances are connected in parallel?

a)

Voltage splits

b)

Current splits

c)

Resistance increases

d)

All stop working

44.

If power consumption increases, what should be done?

a)

Use thinner wires

b)

Increase resistance

c)

Install proper breaker

d)

Remove grounding

45.

Which blueprint detail helps ensure correct dimensions?

a)

Symbols

b)

Notes

c)

Scale

d)

Color

46.

Why is a fuse placed in series?

a)

To increase voltage

b)

To stop current during fault

c)

To stabilize power

d)

To reduce noise

47.

A student uses damaged tools. What should be done first?

a)

Continue work

b)

Repair circuit

c)

Replace tool

d)

Increase voltage

48.

If measured current is higher than computed, what is possible?

a)

Meter error

b)

Wire resistance

c)

Short circuit

d)

All of the above

49.

Why is copper preferred for wiring?

a)

Cheap

b)

Flexible

c)

High conductivity

d)

Strong

50.

Which practice improves project efficiency?

a)

No planning

b)

Improvised tools

c)

Proper scheduling

d)

Ignoring safety

51.

A building plan lacks legend symbols. What problem arises?

a)

Safety issue

b)

Misinterpretation

c)

Budget increase

d)

Faster work

52.

What improves safety in electrical labs?

a)

Wet floors

b)

PPE usage

c)

Overloading

d)

Exposed wires

53.

Which improves circuit reliability?

a)

Loose connections

b)

Proper insulation

c)

Mixed wire sizes

d)

Overheating

54.

What happens when grounding is absent?

a)

Lower cost

b)

Better power

c)

Increased shock risk

d)

Faster current

55.

A project exceeds budget. What was lacking?

a)

Tools

b)

Labor

c)

Planning

d)

Wiring

56.

A student draws wrong symbols. What is affected?

a)

Design clarity

b)

Voltage

c)

Resistance

d)

Safety

57.

Which practice reflects good workmanship?

a)

Speed only

b)

Accuracy only

c)

Accuracy with neatness and adherence to standards

d)

Use of improvised tools

58.

Which wiring layout best follows safety standards?

a)

Exposed joints

b)

Overloaded circuits

c)

Proper breaker installation

d)

Mixed wire sizes

59.

Which material is most sustainable for construction?

a)

Plastic

b)

Treated wood

c)

Steel

d)

Glass

60.

Which project plan is most effective?

a)

No budget

b)

No schedule

c)

Clear scope & safety plan

d)

No materials list

61.

Which practice best reduces electrical accidents?

a)

Experience only

b)

PPE and training

c)

Speed

d)

Improvisation

62.

Which diagram best communicates wiring layout?

a)

Perspective drawing

b)

Schematic diagram

c)

Artistic drawing

d)

Floor sketch

63.

Which action shows responsible electrical work?

a)

Bypassing fuse

b)

Ignoring codes

c)

Following standards

d)

Overloading

64.

Which evaluation best improves project quality?

a)

Guessing

b)

Trial only

c)

Testing & revision

d)

Skipping inspection

65.

Which plan best ensures safe electrical installation?

a)

No grounding

b)

Proper wiring + breaker + grounding

c)

Temporary wiring

d)

Exposed joints

66.

What is the best design improvement for overloaded circuits?

a)

Increase load

b)

Add parallel circuits

c)

Remove fuse

d)

Reduce insulation

67.

Which output best shows project planning?

a)

Oral story

b)

Gantt chart + budget

c)

Drawing only

d)

List of tools

68.

Which design best supports sustainability?

a)

Excess materials

b)

Recycled materials

c)

No planning

d)

Single-use tools

69.

What improves clarity of electrical documentation?

a)

Colors only

b)

Standard symbols

c)

Random labels

d)

No legend

70.

Which activity best demonstrates mastery?

a)

Memorization

b)

Guessing

c)

Designing and testing

d)

Copying

71.

The law that relates voltage, current, and resistance is ________.

a)

Ohm's law

b)

Kirchhoff's current law

c)

Faraday's law

d)

Coulomb's law

72.

The unit of electrical resistance is ________.

a)

ohm

b)

ampere

c)

volt

d)

watt

73.

PPE is used to prevent ________.

a)

overheating

b)

injury

c)

cost overruns

d)

signal loss

74.

A ________ circuit has multiple paths for current.

a)

series

b)

parallel

c)

open

d)

short

75.

The device that protects circuits from overload is a ________.

a)

resistor

b)

fuse

c)

capacitor

d)

transformer

76.

Concrete is strong in ________ but weak in tension.

a)

compression

b)

torsion

c)

shear

d)

insulation

77.

A drawing that shows wiring symbols is called a ________ diagram.

a)

schematic

b)

perspective

c)

artistic

d)

exploded

78.

Electrical shock risk increases when hands are ________.

a)

wet

b)

gloved

c)

clean

d)

dry

79.

Copper is preferred because of its high ________.

a)

resistance

b)

conductivity

c)

brittleness

d)

opacity

80.

A project schedule helps ensure work is done on ________.

a)

time

b)

paper

c)

weekends

d)

guesswork

81.

Grounding directs excess current to the ________.

a)

battery

b)

earth

c)

neutral wire only

d)

switch

82.

The tool used to measure current is an ________.

a)

voltmeter

b)

ammeter

c)

ohmmeter

d)

oscilloscope

83.

Sustainable materials reduce environmental ________.

a)

impact

b)

wiring

c)

profit

d)

voltage

84.

Blueprints guide proper ________ execution.

a)

construction

b)

musical

c)

culinary

d)

marketing

85.

Electrical codes ensure ________ and compliance.

a)

fashion

b)

safety

c)

speed

d)

aesthetics

86.

Law that states total current entering a junction equals current leaving it.

a)

Ohm's law

b)

Kirchhoff's current law

c)

Faraday's law

d)

Lenz's law

87.

Device used to measure voltage, current, and resistance.

a)

multimeter

b)

transformer

c)

rheostat

d)

relay

88.

Protective gear worn during electrical work.

a)

insulated gloves

b)

sandals

c)

scarf

d)

earplugs only

89.

Diagram showing electrical connections using symbols.

a)

circuit diagram

b)

portrait

c)

bar chart

d)

blueprint

90.

Material commonly used for electrical wiring.

a)

copper

b)

plastic

c)

wood

d)

glass

91.

Tool used to tighten or loosen bolts.

a)

wrench

b)

trowel

c)

chisel

d)

saw

92.

Type of circuit used in homes.

a)

parallel

b)

series

c)

open

d)

short

93.

Document showing construction layout and dimensions.

a)

blueprint

b)

memo

c)

invoice

d)

license

94.

Safety practice that prevents shock.

a)

grounding

b)

overloading

c)

bypassing fuses

d)

wet hands

95.

Electrical component that limits current.

a)

resistor

b)

battery

c)

switch

d)

transformer

96.

Plan that outlines tasks, budget, and schedule.

a)

project plan

b)

floor sketch

c)

oral story

d)

single drawing

97.

System that prevents electric shock through earth connection.

a)

grounding system

b)

overcurrent system

c)

insulation removal

d)

series wiring

98.

Hand tool used for striking.

a)

hammer

b)

screwdriver

c)

tape measure

d)

pliers

99.

Electrical protection device that can be reset.

a)

circuit breaker

b)

fuse

c)

resistor

d)

diode

100.

Principle used to compute electrical power.

a)

P=V×IP = V \times I

b)

V=I×RV = I \times R

c)

E=mc2E = mc^2

d)

F=maF = ma

101.

A circuit has a voltage of 10 V10\ \mathrm{V} and a resistance of 5 Ω5\ \Omega . What is the current?

a)

0.5 A

b)

1 A

c)

2 A

d)

5 A

102.

If the current flowing in a circuit is 3 A3\ \mathrm{A} and the resistance is 4 Ω4\ \Omega , what is the voltage?

a)

1.33 V

b)

7 V

c)

12 V

d)

24 V

103.

A resistor has a resistance of 6 Ω6\ \Omega and is connected to a 12 V12\ \mathrm{V} source. How much current flows?

a)

0.5 A

b)

1 A

c)

2 A

d)

6 A

104.

A circuit carries 2 A of current at 8 V. What is the resistance?

a)

2 Ω

b)

4 Ω

c)

8 Ω

d)

16 Ω

105.

Two resistors of 4 Ω and 6 Ω are connected in series to a 20 V source. What is the current in the circuit?

a)

1 A

b)

1.5 A

c)

2 A

d)

2.5 A

106.

A 12 V power supply is connected to a parallel circuit with resistors of 6 Ω and 3 Ω. What is the total current drawn?

a)

2 A

b)

3 A

c)

4 A

d)

6 A

107.

An appliance rated at 240 V draws 2 A of current. What is its resistance?

a)

60 Ω

b)

100 Ω

c)

120 Ω

d)

480 Ω

108.

A circuit has a total resistance of 10 Ω. If the power supply is increased from 20 V to 30 V, what happens to the current?

a)

It remains the same

b)

It doubles

c)

It increases from 2 A to 3 A

d)

It decreases

109.

A wire has a resistance of 8 Ω. If the current must not exceed 1.5 A for safety, what is the maximum allowable voltage?

a)

8 V

b)

10 V

c)

12 V

d)

15 V

110.

A student measures 1.8 A of current in a circuit supplied by 9 V. The computed current was 2 A. Which is the MOST reasonable explanation?

a)

Ohm’s Law is incorrect

b)

The resistor value changed

c)

Measurement and internal resistance affected the result

d)

Voltage source failed

111.

Name this symbol:

a)

Battery

b)

Wire

c)

Bulb

d)

Open Switch

112.
What is this symbol for?
a)
light bulb
b)
switch
c)
battery
d)
resistor
113.
This is the symbol for a ...
a)
Wire
b)
Battery
c)
Buzzer
d)
Fuse
114.

What components are in this schematic diagram?

a)

battery, switch, bulb, wire

b)

switch, switch, bulb

c)

battery, switch, bulb, motor

115.

Select the symbol for LIGHT BULB

a)
b)
c)
d)
116.

Name this component:

a)

Ampere

b)

Switch

c)

Bulb

d)

Battery

117.
This is the circuit symbol for ...
a)
an AC current source
b)
a DC current source
c)
an ammeter
d)
a voltmeter
118.
This is the circuit symbol for ...
a)
an AC current source
b)
a DC current source
c)
an ammeter
d)
a voltmeter
119.

What is the following symbol represent?

a)

Wire

b)

Resistor

c)

Battery

d)

Switch

120.
This is the symbol for 
a)
Variable resistor
b)
Thermistor
c)
Resistor
d)
Fuse
121.
a)
Closed switch
b)
Push switch
c)
Trap door
d)
AC Power supply
122.
This is the circuit symbol for ...
a)
an AC current source
b)
a DC current source
c)
a battery
d)
a single cell
123.

What circuit element is this?

a)

Fixed Resistor

b)

Wire

c)

Power Supply

d)

Capacitor

124.

This is the symbol for a...

a)

Battery

b)

Thermistor

c)

Motor

d)

Fuse

125.

_________ are used in drawing circuits instead of drawing pictures.

a)

Symbols

b)

Marks

126.

7. Choose the correct symbol of a wire.

a)
b)
c)
d)
127.
This is the symbol for a ...
a)
Bulb
b)
Battery
c)
Horn
d)
Fuse
128.
This is the symbol for 
a)
An Ammeter
b)
A Voltmeter
c)
A Meter
d)
A Motor
129.

Which symbol represents a 'cell'?

a)
b)
c)
d)
130.

Which symbol represents a 'voltmeter'?

a)
b)
c)
d)
131.

What is the purpose of a countersunk screw head?

a)

To make the screw visible

b)

To make the screw stand out

c)

To allow the screw to be beneath the surface

d)

To make the screw harder to use

e)

To make the screw more expensive

132.

Which type of screw is the most commonly used?

a)

Round head

b)

 Countersunk head

c)

Pan head

d)

Dome head

e)

  Bugle head

133.

What is the importance of drafting?

a)

It is not important

b)

It is important for preserving old drawings

c)

It assists in the understanding of product design

d)

It is an exercise in art

e)

None of the above

134.

What is the purpose of thick lines in drafting?

a)

To indicate hidden edges

b)

To indicate center lines

c)

To indicate dimensions

d)

To indicate the edges and details of an object

e)

To indicate auxiliary views

135.

What accurately describes the symbols used in drafting?

a)

They are meaningless

b)

They represent only the size of the product

c)

They represent only the shape of the product

d)

They accurately describe the shape, size, material, finish, and fabrication or assembly of a product

e)

They represent only the color of the product.

136.

Which joinery method is similar to a tongue and groove joint?

a)

lap joint

b)

mortise and tenon joint

c)

dovetail joint

d)

finger joint

e)

dado joinery method

137.

What is the difference between a rabbet and a dado joint?

a)

Rabbet is across the grain while dado is along the grain.

b)

Rabbet is the strongest joint while dado is the weakest.

c)

Rabbet is used for reinforcing wood length while dado is used for framing.

d)

Rabbet is a groove running along the grain while dado is across the grain.

e)

Rabbet is a joint used for fastening metal pieces while dado is used for wood.

138.

What is the advantage of using a joint in cabinet making?

a)

It provides a more ornamental finish

b)

It makes the assembly process faster.

c)

It allows for easier disassembly

d)

It provides good reinforcement.

e)

It requires less wood to be used.

139.

What type of joint is typically used for constructing frames for holding glass?

a)

Mortise and tenon

b)

Dovetail

c)

Rabbet

d)

Miter Joint

e)

Finger Joint

140.

Why might you hire a joiner instead of a general carpenter?

a)

A joiner is cheaper

b)

You prefer their specific woodworking style.

c)

A joiner specializes in the particular type of woodworking product you need.

d)

A joiner uses better quality tools.

e)

A carpenter lacks the necessary woodworking skills.

141.

Decorative trim and molding work is ideal for fine nails.

a)

TRUE

b)

FALSE

142.

Slender nails are not suitable for attaching skirting and back boards.

a)

TRUE

b)

FALSE

143.

Finish nails are perfect for carpentry jobs where appearance is critical.

a)

TRUE

b)

FALSE

144.

Sheet metal fastening is not a common use for nails.

a)

TRUE

b)

FALSE

145.

Round head nails are only for jobs requiring a clean finish.

a)

TRUE

b)

FALSE

146.

The wood screw family offers screws for indoor use only.

a)

TRUE

b)

FALSE

147.

Hexagon head wood screws are available for outdoor use.

a)

TRUE

b)

FALSE

148.

Finish nails are not suited for rough carpentry jobs.

a)

TRUE

b)

FALSE

149.

The use of nails, screws, or glue is not a common method of joining pieces of wood together.

a)

TRUE

b)

FALSE

150.

If a woodworker masters wood joinery, they will become a very accomplished woodworker.

a)

TRUE

b)

FALSE

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