Biofuels Act of 2006 is also known as

What energy generating plant does not use turbine for power generation?

From the BiGSHOW acronym of renewable energy coverage, what “Bi” stands for?

Aerogenerator, covered lagoon biodigester and minihydro energy projects are evaluated for financial feasibility. Only one feasible project can be funded. Each project needs PHP 30M investment. The financial internal rate of returns are 12%, 8% and 9%, respectively. Annual discount plus inflation rate is 11%. Which of the 3 projects shall be implemented?

What part of solar module should be included such that solar charging is continuous at slower rate even when partially shaded by trees?

What diode is needed as protection against lightning in solar installations?

What pin is common in integrated circuits (ICs)?

A kind of IC included as an important part of electronic instruments for gathering speed, velocity and discharge real-time data.

Which one is an integrated circuit (IC) used in instrumentation and control?

Which DC voltage is best for remote instrumentation?

Transmission of data to a remote line-of-sight point is best done using

To automate control of irrigation dam gates, what switch is useful in the instrumentation?

A switch for automatic starting of pumps with sealed water tank in drip irrigation systems.

In an aerogenerator exceeding 100 kw capacity, which part is responsible in converting rotational movement to electricity?

What component of force is used in multi-bladed windmills?

What component of force is used in savonius windmills?

While the windmill is in operation, what efficiency can exceed 100%?

In multi-bladed windpumps, which part is responsible in converting rotational movement to reciprocating action?

What tail type of multi-bladed windpump is more effective for windy areas?

In wind farm development, which should be done first?

In multi-bladed windpump manufacturing, which should be done first?

To have bigger water displacement volume in windpumps, which should be increased?

In windmill design, what should be the average rotor blade twist angle in degrees to have a tip speed ratio of 1:1?

If typical overall efficiency of savonius windmills is 7-10%, what is the typical overall efficiency of aerogenerators?

If a multi-bladed windpump has a tip-speed ratio of 1:1, what windspeed is needed to have its rotor tip move at 3 m/s?

A windmill with 6 meters rotor diameter, 5 cm pump diameter and 2 cm crank arm is to be modified due to low volumetric efficiency. What should be done?

What is the electrical energy consumption of a 20-kw vermi cast production shredder plugged in a 220-volt source if it requires 2 hours to shred 1.6 tonnes of farm waste?

Kind of battery useful in solar-powered energy systems.

Material used in solar cells.

In a sunny 12:00 noon in the Philippines, what is the likely voltage reading of solar pump without battery when load is in turned on?

In a sunny 12:00 noon in the Philippines, what is the likely voltage reading of solar battery charger when no battery is being charged?

At 8:00 P.M. in the Philippines, what is the likely voltage reading of a solar home system when all loads are turned on?

In solar panel installation, which positive polarity wire should be connected last to the battery control unit?

If a coconut tree shades half of solar module, which condition is true?

A 102 kw hydro power plant is classified as

Under Philippine classification, what is the maximum power rating for microhydro?

A geothermal power generation principle resembles a

In a geothermal power plant development, which stage comes first?

The rotating part in geothermal power plants which drives the generator.

The operating principle of Ocean Thermal Energy Conversion (OTEC) system resembles a

In Ocean Thermal Energy Conversion (OTEC) system, what causes fluid flow which passes through the turbine?

Industrial bottling of virgin coconut oil prints a batch number. What is the main purpose of this batch number?

Which one is a part of a vertical feed mixer?

As a standard, stripping efficiency of the mechanized stripping machine shall be at least

A 2.4-tonne capacity Jatropha oil expeller was loaded full with dried Jatropha seeds in 4 minutes. It produced 600 kg of crude oil in 3 hours. What is its crude oil production rate?

A Jatropha oil expeller was loaded with 2.1 tonnes dried Jatropha seeds. It produced 600 kg of crude oil in 3 hours. What is its Jatropha cake production rate?

A 20-tonne capacity coconut oil expeller was loaded full with grated copra. It produced 8,000 kg of crude oil in 20 hours. What is the copra cake production rate of the machine at 98% cake collection efficiency?

How many tonnes of agricultural waste is needed annually to optimally operate a 26-ampere 6-kw vermi cast production shredder having a capacity of 0.30 tonne of waste per hour? It optimally operates 16 hours daily during the 3-month peak sunny months and 9 h/day at 25 days/month for the rest of the year.

The minimum carriageway of one-lane and two-lane farm-to-market roads, respectively, excluding the road shoulders, shall be

In lateral and sub-lateral irrigation canals where the available roadway width is 3 meters, the carriageway and shoulder, respectively, of the farm-to-market road shall be

In main irrigation canals where the available roadway width is 6 meters, the shoulder and carriageway, respectively, of the farm-to-market road shall be

For gravel and bituminous farm-to-market roads, the minimum slope from the centerline towards the ditch shall be

For concrete farm-to-market roads, the maximum slope from the centerline towards the ditch shall be

For farm-to-market roads constructed along the main, lateral and sub-lateral irrigation canals, the run:rise side slope of the earth embankment shall be

In farm-to-market roads, the minimum radius of curvature for rolling shall be

In a bituminous farm-to-market road, what course is the third layer from the top?

As an engineer, what thickness of the Portland cement concrete pavement will you use in a two-lane farm-to-market road?

In concrete farm-to-market road construction, what plus or minus in thickness variation will you allow in the Portland cement concrete pavement?

Culverts and storm drains have ideal slope of 2-4 %. What is the absolute minimum slope for culverts and storm drains?

In concrete farm-to-market road design, what class A concrete thickness will you use in triangular concrete-lined ditch?

In concrete farm-to-market road design, what wall thickness will you use in rectangular grouted riprap ditch?

As a contractor, what project management amount in terms of estimated direct cost percentage will you charge aside from the 10-15 % profit in farm-to-market road projects?

The standard diameter of both vertical and horizontal reinforcing bars in open channel construction.

In open channel construction, what class of concrete mix should be used?

The standard spacing between vertical bars in open channel construction.

In open channel design, what is the standard concrete wall thickness of lateral trapezoidal open channel?

The standard gage number of G.I. tie wire for open channel construction.

In class A, B or C concrete, how many cubic meters of sand should be mixed to produce 1 cubic meter of concrete?

In open channel construction, how many 40-kg bags of cement are needed per cubic meter of concrete?

In open channel construction, how many 50-kg bags of cement are needed for a 11-km lateral channel if it requires 0.7 cubic meter concrete per linear meter? Use 5% safety factor.

How many truck loads of sand are needed for 25-km main irrigation canal requiring 3.5 cubic meters concrete per linear meter? 1 truck load is 2.5 cubic meters. Use 5% safety factor.

Estimate the truck loads of gravel needed for an 10-km main irrigation canal requiring 4 cubic meters concrete per linear meter. 1 truck load is 3.5 cubic meters. Use 6% safety factor.

How much should be budgeted for cement for 20-km irrigation canal if it requires half cubic meter concrete per linear meter and cement costs Php200/bag? Use 5% safety factor.

Give cement budget estimate for 25-km canal requiring 3/4 cubic meter concrete per linear meter. Cement costs Php240/bag while transport costs Php 20/bag. Use 5% safety factor.

A concrete dam with 50,000 sq.m. submerged vertical upstream wall is to be constructed against a 546 tonnes/sq.m. average water pressure. Coefficient of friction at dam base is 0.8. What should be the minimum dam weight? Use factor of safety against sliding of 2.

The amount paid to project owners from CDM fund for carbon emission reduction projects.

The acronym of the Inter-Governmental Panel for Climate Change.

Best kind of biogas plant for large animal farms having effluents with low solid content.

Plastic sheet for constructing balloon and bed lining in covered lagoon biogas plants.

By how many times is methane destructive to the environment than carbon dioxide?

Toxic by-product of geothermal power plants.

When using covered lagoon biodigester, what is approximate methane content in biogas?

What is the minimum methane content of biogas in order to operate biogas-fueled generators?

When using 1:1 water-manure ratio, what is the approximate methane content of biogas?