The effect of the dielectric is to

What will happen to an insulating medium if subjected to a voltage more than its basic impulse insulation level? It will ___

What type of motor is used for food mixer

Receptacle outlet shall be located not more than ___ mm above countertop

A diesel power plant is best suited as

what is the minimum distance between receptacle outlets in meters of a show window?

In Philippine distribution code purposes, which of the following is not belong ?

The resistance of conductor increases

which type of the DC motors is not directly connected to the load

In the DC motor which one is not considered in determining the speed ?

what is the device used and connected to a generator to prevent motorizing?

Dwelling units at least one receptacle outlet for hallways more than ___ m

A device use for switching carrying and interrupting a system for a both fault and pull load condition

Factor in determining specific resistance

Appliances receptacle outlet in dwelling unit for specified appliances shall be installed __ mm of the intended location

What is the minimum ampacity of feeders with motor and other load connected

Installation of wire is based on

Outdoors outlets one family dwelling shall be installed not more than __ mm at the grade level at the front or back of the family dwelling

What is the best conductor of electricity

In Philippine grid code, which notice issued by system operator when the contingency reserve is less than the capacity of the largest generating unit for power import from a single interconnection, whichever is higher

In Philippine grid code, which alert issued by system of a operator when the contingency reserve is zero, a generation deficiency exists, or there is critical loading or imminent overloading of transmission lines and equipment

In Philippine grid code, which notice issued by system operator when peace and order problems exists, which may affect the grid operations.

In Philippine grid code, which note is issued by system operator a weather disturbance has entered the Philippine area of responsibility

Refers to the condition and the loading of transmission lines or substation equipment is between 90% and 100% of the continuous rating

In Epira law, a voltage level exceeding 1000 votes up to 34.5 kV is classified as:

The grid shall be considered at normal state when the loading levers of the transmission line and substation equipment are below __ of their continuous rating

The grid shall be considered normal state when the frequency is within limits of __ and __

The component of contingency reserve, which is synchronized to the grid and ready to take on load

Spinning reserve is also called

Refers to a generating unit that has fast start capability and can synchronize with the grid to provide its declared capacity for a minimum period of 8 hours

Back up reserve is also called

Generating capacity that is intended to take care of the loss of the largest synchronize generating unit or the power import from a single grid interconnection, whichever is larger

if the transmission voltage is increased, the percentage resistance drop will

The power transmission capacity of the transmission line is

The material used for fuse wire must have

The Buchholz relay is used to protect the

to protect the power transformer (Y - Y, woth neutral grounded) against fault, the CT will have,

The location of the lightning arrester is

Which of the following distribution systems gives the greater reliabilty

The power intended to be available even under emergency condition is called

Series capacitor are used to

The short circuit in any windings of the transformer is the result of

Which of the following relays are used for phase fault on long line?

The protection from negative sequence current is provided for

AC system has the following disadvantage over DC system

The voltage regulation is an important factor for the design of

Which of the following breaker has a reability and minimum of maintenance

If the capacitance of the transmission line is increased, the transmitted power will

Which of the following method may be used to inject reactive power in the transmission line?

the guard wire is firmly connected with

the load must not be connected directly on

The lighting arrester is installed

Incase of pin type insulators the petticoats are provided to

If the specific resistance of the conductor is increased, what effect does is the result on the skin effect

The capacitor bank is installed

Pole mounting substation are also known as

A circuit breaker serves the purpose of

As compared to steam stations, Hydro power station hub

In Practice the cost of energy transformation is minimal for

The peak load demand of an industrial area is met by

Diversity factor is that

Demand factor for a domestic fan and refrigerator is approximately

The surge impedance of a transmission line differs from its characteristics impedance, as surge impedance consider line

Booster transformers are used to increase the voltage at ...... of a transmission line

The transfer of real power between interconnected stations is affected by

Shunt conductance in power transmission lines is due to leakage over the

Voltage gradient in a cable is highest at the

The real part of propagation constant of a transmission line is

For a span of length of 21. horizontal tension at supports as T weight of the conductor per unit length is w, the maximum value of sag will be

The sag of the transmission line is affected by

Most commonly used supports for high tension lines is

When horizontal tension H increases by 20%, the tension T changes by a

A transmission line is a circuit with

When the conductor of a three-phase circuit are not spaced equilaterally, the transposition is done to.

the transmission line inductance contributed by

Regulating transformers are used inpower system to control

the presence of earth alters the

A two terminal pair of network of a transmission line can be represented by a

Ferranti effect states that the receiving end voltage on no load is

advantage of constant voltage transmission are:

A transmission line has value of its A constant as

the cause of transient stability is

Corona always causes

Lamp flicker in secondary distribution system is controlled by

Transient stability can be improved by the use of

When a line to line fault occurs, the SC current of an alternator depends upon its.

Cause of faults in power system

The various power system faults can be arranged in the order of increasing severity is

The negative sequence component of a voltage is equal to

In circuit breakers, the arc is initiated by the process of

At the open circuited end of a transmission line, the reflection coefficient is

When a wave propagate on a transmission line, it suffers reflection several times at

advantages lf grounding are:

When the fuel input to the prime mover of an alternator is increased. it increases its

The generating station with mimimum running cost is

power plant having the maximum efficiency is

Tapping in on load tap changing transfomer are provided on

The cost of the power generation will decrease when the load factor

Water is used only for cooling purposes in

turbo alternators usually have