For Final Exam

Question 1

In run-of-the river hydropower systems, typically, the water is taken from the river at ___________ and diverted to a channel or penstock.
a. high point
b. low point
c. pumping station
d. a dam

Answer 1

a. high point

Question 2

This hydropower system provides peak-load supply, where water is cycled between lower and upper reservoir using surplus energy from the system during low demand.
a. offshore hydropower
b. pumped storage hydropower
c. run-of-the river
d. large scale hydropower

Answer 2

b. pumped storage hydropower

Question 3

These are structures found in or adjacent a dam to pass floodwater safely in a controlled way.
a. draft tube
b. outflow
c. spillway
d. diversion canal

Answer 3

c. spillway

Question 4

The reason why transformers are used in a hydropower powerplant
a. To provide electricity for the generator to work
b. The generator cannot provide enough voltage for transmission
c. Transmission lines can only be connected with transformers
d. All of the choices

Answer 4

b. The generator cannot provide enough voltage for transmission

Question 5

Agno River are impounded by the following dams except one.
a. Angat Dam
b. Binga Dam
c. Ambuklao Dam
d. San Roque Dam

Answer 5

a. Angat Dam

Question 6

This ocean energy source may be considered in hydropower system.
a. OTEC
b. Salinity Gradient
c. Tidal Range
d. None of the choices

Answer 6

c. Tidal Range

Question 7

This explains why sluice is used in storage hydropower systems.
a. To control the flow of water through the penstock
b. To screen earth materials/debris from passing through the penstock
c. Sluice is not used in hydropower systems
d. To test the temperature of water

Answer 7

a. To control the flow of water through the penstock

Question 8

Which of the following statements is/are true?
a. penstocks are allowed to be wide open during dry seasons
b. penstocks are closed to ensure regular cleaning, inspection and repairs
c. Penstocks should be piped to prevent leaking
d. All statements are correct

Answer 8

a. penstocks are allowed to be wide open during dry seasons
b. penstocks are closed to ensure regular cleaning, inspection and repairs

Question 9

Absence of bypass channels in a hydropower system will likely result to _______.
a. huge impact to fishes and other aquatic animals
b. flooding during heavy rainfall
c. Both choices
d. None of the choices

Answer 9

a. huge impact to fishes and other aquatic animals

Question 10

Most electricity-producing geothermal resources have temperatures from _________ to 700°F.
a. 300°F
b. 30°F
c. 100°F
d. None of the choices

Answer 10

a. 300°F

Question 11

Geothermal Energy system can be compared to the kettle concept. Now, complete the analogy, fire:heat as to container:_________.
a. water
b. drilling well
c. reservoir
d. water

Answer 11

c. reservoir

Question 12

Which of the following is not a component of a Geothermal Power Plant
a. settling ponds
b. wellbore
c. gas removal systems
d. all of the choices

Answer 12

d. all of the choices

Question 13

The largest 100% renewable energy company in the Philippines
a. EDC
b. PNOC
c. Aboitiz Power
d. PGPC

Answer 13

a. EDC

Question 14

The Philippine Geothermal Production Company, Inc. (PGPC) is now owned by _______________.
a. Lopez Group of Companies
b. SM Investment Corporation
c. Philippine National Oil Company
d. Both a and b

Answer 14

b. SM Investment Corporation

Question 15

The most active Geothermal resources are situated along tectonic plate boundaries where most volcanoes are located. With this, which of the following locations has/have potential for
geothermal energy resource.
a. Himalayan Region
b. The Alps
c. Rockies Mountain
d. All of the choices
e. Only a and b

Answer 15

d. All of the choices

Question 16

Which of the following best describes how geothermal powerplants generate electricity
a. The pressurized steam from wells enters and runs through the turbine, converting kinetic energy to electrical energy through generator
b. The pressurized steam from wells enters and contracts through the turbine, converting thermal energy to mechanical shaft energy to electrical energy through generator
c. The pressurized steam from wells enters and expands through the turbine, converting thermal energy to mechanical shaft energy to electrical energy through generator
d. The pressurized steam from wells through the turbine, converting hot gas to mechanical energy to electrical energy through generator

Answer 16

c. The pressurized steam from wells enters and expands through the turbine, converting thermal energy to mechanical shaft energy to electrical energy through generator

Question 17

This is the process of converting sunlight into chemical energy.
a. Solar Energy Effect
b. Photovoltaics
c. Photosynthesis
d. Solar Technology

Answer 17

c. Photosynthesis

Question 18

Which of the following best describes Concentrating Solar Thermal Technologies (CST).
a. It uses solar heat to boil water and generate steam to drive a turbine-generator to generate electricity
b. It uses combination of fossil fuel and solar energy to boil water and generate steam to drive a turbine-generator to generate electricity
c. It is uses mirrors to concentrate solar and energy and use it to run a turbine to generate electricity
d. None of the statements is true

Answer 18

a. It uses solar heat to boil water and generate steam to drive a turbine-generator to generate electricity

Question 19

All are components of a Concentrating Solar Thermal Technology except one.
a. Steam drum
b. Heliostats
c. Turbine
d. cooling system

Answer 19

d. cooling system

Question 20

The following are true about solar power systems except one.
a. Can be installed in rooftops
b. Can be used to power irrigation systems c. Can be used to run a turbine for power generation
d. Most effective in open and shady areas

Answer 20

d. Most effective in open and shady areas

Question 21

Which among the following countries has the highest photovoltaic power potential according to World Atlas?
a. Norway
b. Madagascar
c. Philippines
d. China

Answer 21

b. Madagascar

Question 22

This component of Solar Power System is used especially in when sunshine is not available in few days.
a. Energy Storage Device
b. Ambient Light from the moon
c. Inverter
d. Trombe Wall

Answer 22

a. Energy Storage Device

Question 23

This best explains why Philippines has good potential for wind energy.
a. Philippines is situated inside the Pacific Ring of Fire
b. Philippines is surrounded by large oceans
c. Philippines is situated in fringes of Asia-Pacific Monsoon Belt
d. All of the choices

Answer 23

c. Philippines is situated in fringes of Asia-Pacific Monsoon Belt

Question 24

This best explains why wind turbines are best located offshore.
a. Due to higher wind speed
b. Due to lack of physical interference from man-made objects
c. Both of a and b
d. On-shore wind turbines are more efficient than those situated off-shore

Answer 24

c. Both of a and b

Question 25

This component of a wind turbine contains the gearbox, low- and high-speed shafts, generator, and brake. a. Tower b. Nacelle c. Yaw System d. Drivetrain

Answer 25

b. Nacelle

Question 26

Which of the following is not true about downhill turbines? a. The flexible blades on a downwind turbine allow for a higher rotation speed b. Does not require a yaw mechanism c. Less compact thus easier to install d. Potentially provides greater energy production

Answer 26

c. Less compact thus easier to install

Question 27

Which is true about upwind wind turbines? a. The rotor is less affected by turbulence from tower and nacelle b. More compact thus harder to install c. The rotor is on the downwind side of the tower d. All statements are correct

Answer 27

a. The rotor is less affected by turbulence from tower and nacelle

Question 28

This keeps the rotor from turning after it’s been shut down by the pitch system. a. drivetrain b. brake c. Yaw System d. pitch system

Answer 28

b. brake

Question 29

Allows the machine to start at minimum required wind speed and shut off the machine when wind exceeds the limit speed a. drivetrain b. pitch system c. controller d. brake

Answer 29

c. controller

Question 30

Which of the following cannot be a product of biomass? a. Fertilizer b. Vehicle Fuel c. Biodegradable Plastics d. All choices can be a product of biomass

Answer 30

d. All choices can be a product of biomass

Question 31

Which of the following cannot be a product of biomass? a. Methane b. Lactic Acid c. Methanol d. All choices can be a product of biomass

Answer 31

d. All choices can be a product of biomass

Question 32

Which of the following is not true about biomass? a. It is renewable b. Derived from organisms of organic resource c. This includes fossil fuels d. Biomass can be harnessed to generate power

Answer 32

c. This includes fossil fuels

Question 33

These are biomass resources except: a. wood b. solid wastes c. animal waste d. none, all choices are biomass resources

Answer 33

d. none, all choices are biomass resources

Question 34

This best explains why uranium enriched with uranium-235 is used in Nuclear Power Plants. a. It has more neutron than other radioactive elements b. Its atoms are easily split apart c. It is more stable compared to other radioactive elements d. Because it is cheaper compared to other radioactive elements

Answer 34

b. Its atoms are easily split apart

Question 35

All are radioactive elements except one. a. Plutonium b. Thorium c. Uranium d. Rhodium

Answer 35

d. Rhodium

Question 36

Which of the following is true about nuclear power plants? a. It has zero-emission clean energy source b. The thermal energy released from fission process runs the turbine c. Nuclear Power plants does not require steam generators to run a turbine d. Like fossil fuel, it also emits GHG but it can be recycled.

Answer 36

a. It has zero-emission clean energy source

Question 37

These are reasons why the Bataan Nuclear Power Plant was not able to take off except one. a. Due to safety concern b. Due to public oppositions c. Due to corruption allegations d. None, all choices are true

Answer 37

d. None, all choices are true

Question 38

According to Energy Information Administration of U.S. this energy resource has the highest capacity factor in 2020 a. Natural Gas b. Geothermal c. Nuclear d. Hydropower

Answer 38

c. Nuclear

Question 39

Which of the following is a disadvantage of nuclear power plants a. Radioactive waste b. High Cost of Building and Decommissioning c. Both a and b d. Nuclear power plants have no disadvantage

Answer 39

c. Both a and b

Question 40

In Nuclear powerplants, uranium is processed into small ceramic pellets and stacked together into sealed metal tubes called _______. a. Core Reactors b. Fuel rods c. Steam Generator d. Water sump

Answer 40

b. Fuel rods