In grounding which is permitted as a grounding electrode I. Building metal frame II. Metal water pipe

For the stable operation of interconnected system, the passive element that can be used as interconnecting elements is.

Iron losses in DC machine are independent variation in

The per unit impedances of a transformer referred from the primary and secondary side

In an alternating current circuit, the voltage lags the current. What element should be placed in parallel to the circuit to improve the power factor unity

Which of the following is vector quantity

Small DC motors up to 5 HP usually have

The mechanical power developed by shunt motor will be maximum when the ratio of back EMF applied voltage is

___ is also known as "Cold standby reserve"

How many three-way and four-way switches for a lighting system control in five different location

In the Philippine electrical code, the branch circuit permissible load is __ %

If a DC motor is to be selected for conveyors, which motor would be preferred

The purpose of the grid system is to

"The total electric flux through any closed surface surrounding charges is equal to the amount of charge enclosed". The above statement is associated with

Induction motor is running at rated load. what will happen when one winding of a delta connected motor is suddenly cut

The economical section of feeder can be obtained by applying

No-load speed of which of the following motor will be highest?

Brushes of DC Machines are made of

The bus bar of the power system, whose voltage magnitude and angle is not known. is called

Thermal protection it's mainly use as ___ protection

Capacitors with it as easily done with

The dark and bright lamp method is used for

a shunt fault is characterized by

The zero sequence current will not flow in the

The ratio of intensity of magnetization to the magnetization force is known as

The coefficient of self-inductance for a coil is given as

A circuit must be protected againts,

What is the standard device number for directional power relay

the value of diversity factor is

Which of the following has the highest value of relative permeability

The breakdown voltage for paper capacitors is usually.

What is the maximum voltage in dwelling unit

The luminous intensity of a lamp is expressed in

The voltage magnitude of a particular bus can be controlled by controlling the

The torque of a synchronous motor when reach synchronism is called

"The mass of an ion liberated at an electrode is directly proportional to the quantity of electricity". The above statement is associated with

What is/are the fundamental process of resistance welding

Which is not standards circuit rating

Play electrode shall be installed of not less than ___ mm below the surface of the soil

The location of the disconnecting means from the second building I. Disconnecting means must be located outside the second building on accessible location II. Disconnecting means must be located inside the entrance of the second building

The two conductors of transmission line carry equal currrent (I) in opposite direction. the force on each conductor is

Which device is used to chane the kW output of generators in parallel?

taps of the transponder must be done at

Paramagnetic materials have relative permeability

The turbine used for high head in hydro plant is

Load flow study is carried out for

Permeability in a magnetic circuit corresponds to an electric circuit

The property of a material which opposes the creation of magnetic flux in it is known as

The maximum efficiency of a distribution transformer is

The frequency of the voltage generated in large alternators

Which of the following is not considered exterior wall space in dwelling?

Fuse in motor provides

The main purpose bonding jumper is to connect equipment grounding conductors and ___ to the grounded conductor of the system

In single phase, 3-wire system, the middle conductor must be which of the following

What is the standard device number for overvoltage relay

what is the IEEE STANDARD DEVICE NUMBER FOR INSTANTANEOUS OVER CURRENT RELAY

The steady state stability limit of a two-machine system depends on

In subsequent iteration, a voltage the controlled bus is treated as load bus when it's

The unit of magnetic flux is

Which of the following plant is expected to have the longer expected life

If the effect of earth is taken into account, then the capacitance of line to ground

A gas turbine power plant usually suits for

Month of March is the fire prevention, what is the electrical safety month

The phenomenon of rise in voltage at the receiving end of the open circuited or lightly loaded line is called

Energy stored in an inductor is given by

Turbo alternators usually have

The no-load current drawn by transformer is usually what percent of the full load current

Convergeance of the transmission load flow is always assured in case of

The zero sequence current in delta winding of Wye/Delta transformer is found

Dielectric strength of transformer oil is expected to

The positive sequence component of the voltage at the point of fault is zero when it is a

Harmonic component of generated EMF will be more in

For load flow analysis transmission line are represented

Minimum thickness of concrete in a concrete in case electrode is

Which of the following is included in the calculation reliability indices of distribution code?

One of the line parameters which is neglected in short transmission line is

Which motor is used in food mixer

One conductor open in a three phase transmission line will develop

What is the minimum diameter of the ground rod

What angle will be illumination be halved to the object

For low head and high discharge, the hydraulic turbine used is

What is the modern light sensor use in fax machine

The most economical load on an underground cable is

Voltage across capacitor at any time t during charging from a DC source of voltage V is given by

The main consideration for higher operating voltage of transmission is to

If real power demand is suddenly increased, frequency of the system will

The protection from negative sequence currents is provided for

What is the purpose of earthing

Energy radiated continuously in the form of lighting waves is called

The unit of capacitance is

The relative permeability of paramagnetic substance

For a DC generator when the number of poles and the number of armature conductors is fixed, then which winding will give the higher emf?

The power consumed in a circuit element will be least when the phase difference between the current and voltage is

What is the minimum size of underground service lateral conductor

Most economic load on an overhead line is

An alternator driven by a Francis hydraulic turbine is a ….... alternator?

For a wye - delta transformer Y-side grounded, the zero sequence current

The commutator segments are connected to the armature conductors by means of

What is the minimum clearance of service drop above the driveway