Objective Fundamentals of Electricity Questions – Electrical Engineering (Page 4)

#61📘 EE Pocket Reviewer RojasEasy

During charging of a lead acid battery, what happens to the specific gravity of the electrolyte?

AIt will decrease

BIt will increase

CIt remains the same

DIt will become zero

#62📘 EE Pocket Reviewer RojasEasy

When the electrolyte of a storage battery is low, what will a technician usually do?

ATop up or add distilled water to the electrolyte

BDrain the battery electrolyte

CCharge the battery first before adding electrolyte

DAdd a special acid solution to the electrolyte

#63📘 EE Pocket Reviewer RojasEasy

What is the form of energy stored in a lead-acid cell?

AChemical energy

BSolar energy

CElectro-mechanical energy

DElectrostatic energy

#64📘 EE Pocket Reviewer RojasEasy

The capacity of a lead-acid cell does not depend on which of the following?

ARate of discharge

BQuantity of the active material

CTemperature

DRate of charge

#65📘 EE Pocket Reviewer RojasEasy

What is the purpose of using distilled water in the electrolyte of a lead-acid cell?

AIt speeds up electrochemical action

BIt improves the specific gravity

CIt prevents or slows down local action

DIt prevents polarization of the battery

#66📘 EE Pocket Reviewer RojasEasy

A rechargeable battery is sometimes called

APrimary cell

BSecondary cell

CDry cell

DVoltaic cell

#67📘 EE Pocket Reviewer RojasEasy

What is the advantage of the iron-nickel battery over the lead acid battery?

AIt needs less maintenance

BIt is much cheaper in cost

CThe output voltage is much higher

DIts efficiency is much higher

#68📘 EE Pocket Reviewer RojasEasy

The level of the electrolyte in a cell should be ____ the level of plates.

AAbove

BBelow

CEqual to

DAny of these, depending on type of plates

#69📘 EE Pocket Reviewer RojasEasy

The life of a storage battery is generally measured in terms of the number of ____.

ACells it contains

BPlates it contains

CAh it can deliver

DTimes it can be cycled

#70📘 EE Pocket Reviewer RojasEasy

What type of cells is used by satellites?

ALead-acid cells

BCarbon-zinc cells

CSolar cells

DNickel-cadmium cells

#71📘 EE Pocket Reviewer RojasEasy

What is the purpose of connecting cells in parallel?

ATo increase the output voltage

BTo increase the current capacity

CTo increase the internal resistance

DTo decrease the current capacity

#72📘 EE Pocket Reviewer RojasEasy

Where would you most likely to find a lead-acid battery?

AIn an LCD wall clock

BIn a flashlight

CIn a portable audio CD player

DIn an uninterruptible power supply

#73📘 EE Pocket Reviewer RojasEasy

Which of the following statements is true during ' charging of a lead-acid cell?

AIt gives out energy

BThe voltage output will increase

CThe specific gravity of the electrolyte will decrease

DIts cathode will become dark chocolate in color

#74📘 EE Pocket Reviewer RojasEasy

The electrical conductivity in liquid solutions depends on which of the following?

ANeutrons

BIons

CProtons

DMolecules

#75📘 EE Pocket Reviewer RojasEasy

Which of the following is used to measure the specific gravity of the electrolyte in a battery?

AHydrometer

BManometer

CMechanical gauge

DPsychrometer

#76📘 EE Pocket Reviewer RojasEasy

Which of the following is a primary cell?

ALead-acid cell

BMercury-oxide cell

CNickel-iron-alkaline cell

DNickel-cadmium-alkaline cell

#77📘 EE Pocket Reviewer RojasEasy

What is the purpose of connecting cells in series parallel?

ATo increase the output voltage

BTo increase the current capacity

CBoth A and B

DNone of these, because it never happens

#78📘 EE Pocket Reviewer RojasEasy

Which one is the usual usage of the Weston cell?

AA voltage reference source

BA power reference source

CA current reference source

DA fuel cell

#79📘 EE Pocket Reviewer RojasEasy

While charging a battery, which one should be strictly followed?

AKeep it in a well-ventilated room

BCheck the acid level with a lighted match sticks

CShort circuit the terminals of the battery to see if its already fully charge

DConnect and disconnect the battery from time to time to rest the supply

#80📘 EE Pocket Reviewer RojasEasy

The ampere-hour capacity of an industrial battery is based on how many hours of discharged?

A12 hours

B8 hours

C24 hours

D6 hours

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