ELECTRICAL 10 NEW

64問 • 1年前

Gaviola Jayson, Alab

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A dedicated computer in given computer network wherein commonly used file and store and access is called

file server

Transistor is made from what materials

silicon carbide compounds

An electronic instrument that usually shows magnitude and shape the alternating current signal

oscilloscope instrument

The arms value of sinusodal ac current is equal to its value at an angle of ___degrees

Transformers are rated in kva instead of kw because

total transformer lost depends on volt ampere

The starting winding of a single phase motor is placed in the

stator

Combination of switch and fuse

safety switch

Fusion energy is produced when

nuclear particles combined

Which relay is used for feeders

translay relay

One watt-second is also equal to which one

1 joule

1 KW is equal to __ft-lb/sec

738

1 HP is equal ___

550 ft-lb/sec

For a dc series motor with saturated condition of field circuit the torque develop is proportional to

the gas inside the inner discharge tube of a sodium vapour lamp is

neon

the transient w/c are produced due to sudden but energetic changes from one steady state of a circuit to another are called___transients

transition

for power transformers the conservator tank is intended to minimize

oil sludging

in a vacuum tube what is the ratio of small change in plate voltage to a small change in grid voltage

amplification factor

what is the normal indication on a megger when checking insulation

infinity

the unit of magnetic field in CGS system is

oersted

100 kw is equivalent___joules per second

100,000

capacitors are used to

block dc and pass ac

a graphical representation between discharge and time is known as

hydrograph

1 volt=____ abvolt

1^8

which of the following is not a standard distribution voltage

16kV

the fuse used for the overhead primary distribution is

expulsion

a type of motor that overspeed at very light load

series

which of the following source is not commercially used

biogas

as referred to the proposed omnibus power act IPP stands for

Individual power producer

when a bird lands on transmission line that are hot it is not electrocuted because

no path for electric flow

211. The incremental transmission loss of a plant is

212. Load flow study is carried out for

213. Diagonal elements of Y—matrix are strengthened by adding

(a) shunt reactors the

214. A long transmission line has certain values of parameters A, B, C, D. If the length is made 100 km thus the parameter

(a) A increases B decreases

215. Three phase transformers which can not be connected in paralled are

216. The main consideration for higher operating voltage of transmission is to

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

(b) increases

218. For a Y — ∆ transformer Y—side grounded, the zero sequence current

219. Corona loss can be reduced by the use of hollow conductor because

220. Convergence characteristic of Dauss—Уeider method is

(a) linear

221. FDLF method is suitable for

(a) high voltage transmission system

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

decreases

Lux is the unit of which of the following

Illumination

A farad is the same as

c/v

what is the IIEE device number of AC Time over current relay

An electrical network having one or more voltage and current sources is transformed into an equivalent electrical network with a single voltage source in series with the internal resistance of the network, with all sources replaced by their internal resistance. This statement is called:

Thevenin's theory

Fiber optics operates on which principle?

reflection

During the loaded shedding, _________

some loads are switched off

A substance that contains a toma with several electron bands but only one valence electron is a:

conductor

An ion ______.

can have either a positive or negative charge

Which of the following processes do nuclear reactors generally employ?

fission

The specific resistance "p" defined as _______

the resistance of a conductor 1 m long with a cross sectional area of 1 m at 20°

What effect does reversing the direction of movement of a conductor in a generator's magnetic field have on the current flow

it reverses the direction of a current flow

In a balance three phase wye-connected circuit, the line voltage is equal_______.

and so were the line currents

Which of the following instruments is connected across the load

voltmeter

Which of the following power plants takes the least time to start from cold conditions and reach full load operation

hydroelectric power plant

An electoral network with one or more voltage and current sources is transformed into an equivalent network with a single current source in parallel with the network's internal resistance, with all sources replaced by their internal resistance, this statement is called:

norton's theorem

At steady state conditions in an RC circuit, the capacitor will act:

open circuit

The copper loss of a transformer is determined by means of a/an__________

short circuit

In a commutator, which of the following statements is true?

mica is harder than copper

Currently, DC motors are widely used in:

electric tractions

A transient disturbance is produced in a circuit whenever ______

the circuit is suddenly connected or disconnected from the supply

In a differential current protection system, the current transformer secondary to wye delta connected power transformers will be connected in _______

delta-wye

Republic act 7832 pertains to_____

the pilferage of electricity, theft of transmission materials, and the rationalizing of system ions

Determine the fourth harmonic of an 800 khz signal.

3.20 megahertz

ELECTRICAL 1

Gaviola Jayson, Alab · 100問 · 2年前

ELECTRICAL 1

100問 • 2年前

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ELECTRICAL 2