When the DBV of insulating oil is lower than the acceptable minimum, this is used to clear the oil of moisture and other impurities.

To ensure safety during maintenance of the electrical system, this is provided on the main switch and padlocked.

This is considered safety reminders to electrical practitioners.

On working overhead, like on poles or any structure 6 feet or higher above the ground, this device/gadget is mandatory.

When a three-phase squirrel cage induction motor fails to start, one of the following is not one of the possible causes.

When a three-phase induction motor runs hot, among the causes are, except:

When a DC motor fails to start, among the possible causes are, except:

When a magnetic contactor produces a buzzing noise, the possible causes are except:

In tightening electrical bolts, this quantity must be given the highest consideration to prevent loss connection.

When the rotor of a motor vibrates as it rotates, one possible cause is:

These are installed on industrial ovens used for drying electrical machines, to ascertain uniform heat distribution.

When electrical machines and equipment are operated 10°C higher than their normal operating temperature at regular frequency, its consequence is:

The eddy current losses on electrical machines can be reduced by:

During the application of insulating varnish, to make sure of positive impregnation on the windings considered, it should be:

When a lead-lead acid battery is fully discharged, its electrolyte turns into:

This kind of electric transformer is used to alter the phase angle or position of either voltage or current.

This transformer is designed to neutralize the unbalanced current on the Edison system.

This is a part of the power system where change is to take place as per load requirement.

The shunt fault on transmission lines that very seldom occurs is the:

This device/instrument is used to determine the correct pressure on the contacts of molded case circuit breakers.

Ten to forty horsepower motors with a service category of 'easy', and are to operate only one hour per day, is recommended for greasing every:

Motors with a standard type of service like that of machine tools, fans, pumps and textile machines with a rating of not more than 40 Hp., are to be regreased every:

Vibration-displacement indicators are tools used for:

This electrical drawing is used to determine the flow of power from source to the load:

The electrical standards used in the Philippines and as the basis of the Philippine Electrical Code is:

As far as the New Electrical Engineering law (R.A. 7920) is concerned, this is a requirement before an electrical engineer's license can be renewed by PRC.

Underwriters Laboratories is an institution established by these groups, to evaluate manufactured electrical components and devices for safety:

This is a laboratory instrument/tester used to measure DC and AC voltages, current and even frequency.

A six leads delta induction motor is to be connected to an autotransformer starter, the leads to be connected together are:

A nine leads delta connected motor is to be connected to a primary resistor starter for its lower voltage rating operation, the leads to be joined together are:

This is an electronic gadget which can be used in lieu of a magnetic contactor.

When connecting electrical transformers in parallel, among the requirements to be satisfied are as follows, except:

When connecting DC generators in parallel, among the requirements to be satisfied are, except:

The horsepower rating of an electric motor which is allowed by PEC to use its plug as its controller.

This is the type of ammeter used in an electrical circuit without causing opening in the circuit for its insertion.

This type of controller has pre-settings done on computers, and to actuate only if these settings have been satisfied while the controlled machine is in operation.

This is the type of surge suppressor used to prevent transients from damaging electronic equipment during the occurrence of lightning or switching surges:

This type of motor controller serves two purposes, as a circuit breaker and as an overload device:

When connecting a star-delta type of motor for its starting, it requires how many power leads.

This is a method in illumination design where a computer is a necessary tool:

In an urban rail system, preference is given to DC over AC electric trains due to the former's:

The combination of the multiple and series windings of a dynamo in their simplest form:

Of all magnetic materials known to man, this type exhibits the weakest intensity and torque:

This mechanism is provided to most power breakers so that even if the closing coil is energized, it can still be tripped off:

This is the type of power plant that is responsible for the depletion of air in large volumes:

This is the type of power plant that utilizes the stored energy on the building particles of matter:

This is the process of harnessing the stored energy of atoms:

This is believed to be the fuel of the future when hydrocarbons will be fully depleted:

In magnetic circuits, this is the reciprocal of permeance:

The average produced by the ignition coil of most modern automobiles:

When two coils share a common magnetic flux, the proportionate percentage that reaches the passive coil is called:

The forces between electrically charged bodies have been defined by:

The process of strengthening the diminished residual magnetism of generator poles is known as:

Compound generators can be classified according to the following manner, except:

The type of DC generator wherein the internal and external characteristics are somewhat the same:

This is a solenoid formed in a circular appearance:

This is the magnetic induction on the center of an atom caused by the orbiting amperean currents:

Hyperconductors as used in scientific endeavors is associated with:

The opposite of dielectric is:

These are the materials placed on nuclear reactors to produce the heat needed to create steam for power generation:

Type of lamps used to show the electrical position or mode of a certain electrical device or equipment that is not readily within the view of the operator:

When an energized magnetic contactor chatters, one possible cause is:

The light emanating from an operating fluorescent lamp is caused by the collision of the electrons thermionically emitted from its heaters and the molecules of this gas:

The danger of the step-down autotransformer as a power source if the common winding accidentally opens is:

The main difference between RSC and the GI pipe for water lines is their construction's:

The danger of AC voltage when used on submarine electrical transmission or even on distribution is:

The disadvantage of a high-speed electrical machine as compared to the one with moderate speeds:

To make the sizes of electrical machines smaller yet maintaining its original capacity, this action can be done:

When the maximum demand of two branch circuits occurs at the same time, their diversity factor is:

In parallel operation of alternators, the voltage of the incoming machine must be:

Before the incoming alternator synchronizes with the running machine, its frequency compared to the bus must be:

When the lamps used for synchronizing are both bright and dark at the same time, they are said to be in:

This equipment is used to determine the actual torque and brake horsepower of electric motors and related machines.

In a Power Plant, this is where the lighting and power supply for its facilities come from.

When the capacitor installed on a capacitor motor is shorted, the motor:

In a given City, this officer is the person responsible for the safe installation of electrical wiring for every structure.

High Voltage systems can be classified further into, except:

Power circuit breakers are also classified according to operation. Some of these are, except:

A 3 phase motor with 12 leads can be controlled by:

This kind of thermal power plant uses no fuel to produce superheated steam.

For electric motors with NEMA design code, the one with low starting torque is:

A wye-connected 25 Hp induction motor rated 480/240 volts has nine leads. If this is to be operated at its higher voltage rating, the following leads must be joined together.

To approximate the capacitance in microfarads of the capacitor to be used for a capacitor start motor, use the formula:

The average power factor of fluorescent and mercury lamps:

In computing for the horsepower rating of the motor to be used for the main compressor of an air-conditioning unit from 1/2 to 5 tons, the rule of thumb is:

In measuring the depth of the sea in relation to the installation of submarine cables, the unit of length commonly used is the:

This is an electrical measuring instrument used to measure the work done in joules per second.

SCADA as applied to power plant operation stands for:

When the magnetic fluxes due to the series and shunt field windings are aiding, the machine is said to be: