WorksheetsINDUSTRIAL ARTS EXAM
Total questions: 60
Worksheet time: 41mins
In the Four-Stroke Cycle, which stroke allows the piston to expel burnt gases?
Intake
Exhaust
Compression
Power
Which component stores electrical power for starting and accessories?
Alternator
Starter Motor
Battery
Fuse
Which HACCP principle focuses on documentation and record keeping?
Documentation
Monitoring
Verification
Hazard Analysis
Which S in 7S means “shine” or always keep the area clean?
Seiketsu
Seiso
Seiri
Seiton
Which system cools the engine to prevent overheating?
Cooling system
Fuel system
Lubrication system
Ignition system
In the ignition system, the part that creates ignition is the:
Coil pack
Fuel injector
Distributor
Spark plug
What is the order of the Four-Stroke Cycle?
Power → Exhaust → Compression → Intake
Intake → Compression → Power → Exhaust
Intake → Power → Exhaust → Compression
Power → Intake → Compression → Exhaust
Which are core elements of OSH?
Job hiring, employee evaluation, and control measures
Stock taking, record management, control measures
Hazard recognition, risk assessment, control measures
Auditing and policy making
Which two are emission-control devices in engine exhaust?
Turbocharger and radiator
Catalytic converter and muffler
Engine Heater core and alternator
Fuel pump and oil filter
The lubrication system helps:
Increase compression
Clean spark plug tips
Boost fuel pressure
Reduce wear and tear
In steering systems, tie rods connect the steering gear to the:
Wheels
Radiator
Battery
Fuel tank
Which 7S principle ensures procedures and checklists are consistently followed?
Spirit
Shine
Standardize
Self-discipline
The HVAC system includes:
Fuel injectors and HP pump
Radiator, thermostat, coolant
Spark plug, ignition coil, battery
Compressor, condenser, evaporator
Hazard types under principle 1 (hazard analysis) include:
Visual, tactile, mental
Chemical, physical, ergonomic
Cooling, heating, electrical
Steering, braking, suspension
In the lubrication system, oil filter function is to:
Trap contaminants
Pressurize oil
Regulate coolant
Produce spark
The dashboard speedometer measures:
Engine rpm
Vehicle speed
Coolant temperature
Fuel level
Air Brake System prevents:
Engine overheating
Air-fuel mixture variation
Shock absorption in bumpy roads
Wheel lock during hard braking
A unibody vehicle chassis is found mostly in:
Large 6-Wheeler trucks
Modern passenger cars
Farm tractors
Off-road loaders
A mechanic notices frequent fluid spills and clutter around the lift area. Which 7S approach FIRST prevents slip hazards?
Standardize
Discipline
Spirit
Sort
Mechanic replaces alternator because dashboard shows voltage too low. This reflects understanding that alternator:
Reads electrical power
Maintains electrical power
Generates electrical power
Consumes electrical power
Which scientist proposed that electricity consists of the flow of charges carried by electrons?
Michael Faraday in his laws of induction
J.J. Thomson in his electron theory of charge flow
Benjamin Franklin in his atmospheric experiments
Alessandro Volta in his voltaic cell invention
The material class that does not allow free movement of electrons is known as:
Semiconductor used in rectifiers
Metal with low resistance
Insulator restricting electron flow
Alloy with moderate conductivity
A basic unit of electrical current is the:
Ampere representing charge flow
Volt representing electrical force
Ohm representing resistance
Watt representing power output
Which device converts AC voltage levels for transmission and distribution?
Induction motor handling torque
Alternator regulating output current
Capacitor regulating charge storage
Transformer altering voltage magnitude
The law relating voltage, current, and resistance is known as:
Kirchhoff’s junction rule
Ohm’s Law
Power Law
V=IR Law
The scientist who showed that magnetic fields are produced by electric current is:
George Simon Ohm
Hans Christian Oersted
Alessandro Volta
Thomas Alva Edison
Materials like copper and silver belong to the class of:
Magnetic elements storing induction
Conductors allowing electron drift
Insulators dissipating charge
Semiconductors restricting polarity
In static electricity, electric charge accumulates because:
Electrons transfer between surfaces by friction
Current passes continuously in conductors
Heat energy converts charge to electrical
Electrons increases with inductance in the conductor
The unit of electrical resistance is the:
Watt measuring power rate
Ohm measuring opposition to current
Ampere measuring electron flow in a circuit
Joule measuring work
The power consumed by an electrical device is given by:
R = V / I
I = R × V
P = V × I
V = I × W
Step-down transformers are used to:
Increase voltage for long-distance transmission
Decrease voltage for safe domestic distribution
Reverse polarity of alternating circuits
Convert AC to DC for communication
The best description of a conductor is:
Material allowing electrons to move freely
A device changing current direction
A device storing energy through electrostatics
A coating that blocks temperature flow
An electric meter shows 7,842 kWh at the start of the month and 8,126 kWh at the end of the month. The electricity rate is ₱10.00 per kWh. How much is the total electricity bill for the month?
₱2,420
₱2,720
₱2,840
₱3,160
Who among the scientists experimented a kite to prove lightning as an electrical phenomenon?
George Simon Ohm
Hans Christian Oersted
Alessandro Volta
Benjamin Franklin
A step-up transformer increases:
Current while lowering voltage
Voltage while lowering current
Resistance while boosting power
Capacitance without altering induction
Conduction occurs in metals because:
Free electrons move from one atom to another
All atoms remain electrically neutral
Electrons attach permanently to nucleic cell
Protons boost atomic mass-producing neutrons
If 12V is applied across a circuit with 4Ω resistance, the current according to Ohm’s Law is:
0.33 A
3 A
6 A
12 A
The unit that measures power consumed by electrical appliances is the:
Ampere
Watt
Coulomb
Hertz
The electrical energy used in homes is billed in:
Joules consumed per hour
Watt per second
kilowatt-hour
Coulombs per minute
If an appliance operates for 2 hours and the owner estimated to pay ₱48.00 at a rate of ₱12.00 per kWh, how much power consumed?
0.5 kWh
1 kWh
5 kWh
2 kWh
Base you answer in this question "If an appliance operates for 2 hours and the owner estimated to pay ₱48.00 at a rate of ₱12.00 per kWh, how much power consumed?" If the appliance has a resistance of 2 ohms and amperage of 4 Amps, how much would be the voltage input of the appliance?
200 V
100 V
220 V
250 V
Based on the provided text, which option correctly explains the common terminology and the misleading nature of the term "electromotive force" (emf)?
EMF is an abbreviation for a true mechanical force, measured in Newtons, that pushes charges through a circuit, which is why it's considered an inaccurate name for the electrical pressure.
EMF stands for electrical magnitude force and is synonymous with voltage. Its use is misleading only because the abbreviation is confused with the unit, the Volt.
EMF refers to the electrical pressure (voltage), not a true mechanical force. The term is misleading because it is measured in Volts, not the unit of force, the Newton.
EMF is the energy supplied per unit charge, which is measured in Joules. The term is misleading because it should be called "electromotive energy" instead of "force."
What are the basic components of a simple circuit?
Source, Switch, Conductor, Load
Source, Resistor, Capacitor, Load
Source, Wire, Resistor, Connector
Source, Wire, Connector, Load
The price of electricity is ₱6.50 per kilowatt hour (kWh). How much electricity was consumed if a television with 120 W power consumption ran from 7:30 AM to 12:30 PM? How much will this cost?
₱ 3.90
₱3, 900.00
₱ 780.00
₱ 600.00
Given V = 24V and I = 2A, the power rating using P = VI is:
12W
24W
48W
96W
Fossil Fuels (like coal, oil, and natural gas) are widely used for energy production. What is the pair of outcomes that most significantly links their operational mechanism (combustion) to their negative environmental impact?
The risk of meltdown at power plants and the production of toxic heavy metals found in runoff water.
The construction of large-scale dams and the resulting dependence on the water cycle to maintain supply.
The depletion of Uranium reserves and the creation of long-term radioactive waste that requires permanent storage.
The release of greenhouse gases (CO2) which drives climate change, and the emission of sulfur/nitrogen oxides which cause acid rain.
Which statement correctly defines a non-renewable energy source and simultaneously provides an accurate example of its use?
A.
It is an energy source that is inherently clean and produces no waste, such as solar power, which relies on technology instead of fuel.
It is a resource that is consumed faster than nature can naturally create it, such as natural gas, which is a type of fossil fuel extracted from the earth.
It is any source that is non-dependent on weather or climate, such as wind power, which is generated only in certain regions.
It is an energy source whose primary function is to heat water to create steam, which is characteristic of all sources except hydroelectric.
Hydropower is typically classified as a renewable energy source. Which combination of facts below best supports this classification and correctly describes the fundamental physical process it utilizes?
A. It relies on converting the energy of tides, and its renewability is limited only by the amount of salt in the ocean water.
B. It relies on the kinetic energy of rushing water flowing from a higher elevation, and its renewability is maintained by the continuous solar-driven water cycle.
C. It operates by using geothermal heat to boil water underground, and it is renewable because the heat source within the Earth is virtually endless.
D. It is classified as renewable because the power plant equipment can be easily replaced, and it converts the potential energy of wind to turn a generator.
In the generation of electricity from Coal and Nuclear power, what is the crucial Main Intermediate Energy Form that directly drives the turbine to create the final electrical energy?
Nuclear Potential Energy
Thermal Energy
Mechanical Energy
Chemical Energy
Two copper wires of identical material and temperature are used in a circuit:
Wire X has a length of 12 m and a cross-sectional area of 3 mm²,
Wire Y has a length of 8 m and a cross-sectional area of 1 mm².
Assume resistivity remains constant.
Which conclusion BEST explains their relative resistances?
Wire X has higher resistance because the increase in length has more influence than the decrease in cross-sectional area of the material.
Wire Y has lower resistance because it is shorter, and length is the dominant factor affecting resistance.
Wire X and Wire Y have nearly equal resistance because the effects of reduced area and reduced length balance each other.
Wire Y has higher resistance because decreasing cross-sectional area increases resistance more strongly than the reduction in length decreases it.
Which sequence correctly traces the complete energy transformation path from the source to electricity for a Natural Gas power plant?
Mechanical Energy → Chemical Energy → Thermal Energy → Electrical Energy
Thermal Energy → Chemical Energy → Mechanical Energy → Electrical Energy
Nuclear Potential Energy → Thermal Energy → Mechanical Energy → Electrical Energy
Chemical Energy → Thermal Energy → Mechanical Energy → Electrical
Which transformation sequence is correctly matched for the given energy source?
Nuclear Power: Nuclear Potential→Thermal→Chemical→Electrical
Hydropower: Gravitational Potential→Mechanical →Electrical
Wind Power: Mechanical →Thermal→Electrical
Solar Thermal: Light→Mechanical →Electrical
When electron movement becomes continuous, this produces:
Static discharge
Electric Current
Ionization Only
Grounding Effect
A household uses a TV consuming 0.35 kWh per hour (on for 6 hours daily), a computer consuming 0.45 kWh per hour (on for 8 hours daily), a washing machine consuming 1.5 kWh per cycle (twice daily), and a refrigerator consuming 1.1 kWh per hour (on 24 hours). If the electricity rate is 10. 00 pesos per kWh, calculate the total monthly cost (30 days).
₱9,280.00
₱12,640.00
₱10,530.00
₱8,760.00
If voltage remains constant but resistance increases, current:
Increases proportionally
Decreases
Remains unchanged
Converts to heat directly
A transformer works on the principle of:
Electromagnetic induction between coils
Direct electron repulsion
Thermal conduction between wire winding
Stored capacitor charge
A welder uses a step-down transformer to power a tool requiring 24V. If the primary supply is 240V, what is the reason for using step-down conversion?
To increase current so the device can work well minimizing the chance of overheating
To reduce voltage to a safer operating level and prevent equipment damage
To convert AC to DC for welding, since welding needs DC power supply.
To charge the insulation layer, protecting the welder and preventing equipment damage
A generator supplies 100 V to the primary coil of a transformer. The primary has 50 turns and the secondary has 500 turns. The secondary voltage is:
1000 V
500 V
250 V
100 V
Which of the following statements regarding an ideal single-phase transformer having a turn ratio of 1:2 and drawing a current of 10 A from 200 V AC supply in incorrect?
Its secondary current is 5 A
Its secondary voltage is 400 V
Its rating is 2 kW
Its secondary current is 20 A
A transformer having 1000 primary turns is connected to a 250- V AC supply. For a secondary voltage of 400 V, the number of secondary turns should be:
1600 turns
250 turns
400 turns
1250 turns
