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

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

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

What is the best conductor of electricity

The protection from negative sequence current is provided for

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

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

AC system has the following disadvantage over DC system

Installation of wire is based on

Lamp flicker in secondary distribution system is controlled by

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

Spinning reserve is also called

As compared to steam stations, Hydro power station hub

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

Factor in determining specific resistance

The effect of the dielectric is to

Back up reserve is also called

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

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

Corona always causes

Regulating transformers are used inpower system to control

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

The capacitor bank is installed

The generating station with mimimum running cost is

Water is used only for cooling purposes in

Tapping in on load tap changing transfomer are provided on

the presence of earth alters the

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

The power transmission capacity of the transmission line is

Voltage gradient in a cable is highest at the

The transfer of real power between interconnected stations is affected by

In Practice the cost of energy transformation is minimal for

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

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

the guard wire is firmly connected with

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

Transient stability can be improved by the use of

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

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

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

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

The lighting arrester is installed

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

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

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

A circuit breaker serves the purpose of

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

Series capacitor are used to

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

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

Incase of pin type insulators the petticoats are provided to

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

Demand factor for a domestic fan and refrigerator is approximately

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

What type of motor is used for food mixer

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

The negative sequence component of a voltage is equal to

Cause of faults in power system

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

advantage of constant voltage transmission are:

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

Pole mounting substation are also known as

advantages lf grounding are:

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

The Buchholz relay is used to protect the

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

Diversity factor is that

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

The location of the lightning arrester is

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

The resistance of conductor increases

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

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

A transmission line is a circuit with

turbo alternators usually have

The peak load demand of an industrial area is met by

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

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

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

The real part of propagation constant of a transmission line is

A transmission line has value of its A constant as

The voltage regulation is an important factor for the design of

A diesel power plant is best suited as

the load must not be connected directly on

The sag of the transmission line is affected by

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

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

the transmission line inductance contributed by

power plant having the maximum efficiency is

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

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

Which of the following distribution systems gives the greater reliabilty

the cause of transient stability is

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

Most commonly used supports for high tension lines is

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

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

The material used for fuse wire must have

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

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