Question is ⇒ For a group of cells when internal resistance of the group is equal to external load resistance, the group will deliver maximum, Options are ⇒ (A) voltage., (B) current., (C) ampere-hours., (D) efficiency., (E) , Leave your comments or Download question paper.

Question is ⇒ For a group of cells when internal resistance of the group is equal to external load resistance, the group will deliver maximum, Options are ⇒ (A) voltage., (B) current., (C) ampere-hours., (D) efficiency., (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	For a group of cells when internal resistance of the group is equal to external load resistance, the group will deliver maximum
A.	voltage. [Wrong Answer]
B.	current. [Correct Answer]
C.	ampere-hours. [Wrong Answer]
D.	efficiency. [Wrong Answer]
View Answer 6 -7 Explanation:- Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

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⇒ Standard cell
will have precise and accurate constant voltage when current drawn from it is few microamperes only.
will have precise and accurate constant voltage when few milliamperes are drawn from it.
will continue to have constant voltage irrespective of loading conditions.
can supply voltages up to 10 V.

⇒ Which of the following acts as depolariser in Lechlanche cell ?
MnO₂
NH₄Cl
Mn₂O₃
ZnCI₂

⇒ Battery charging equipment should be installed
in well ventilated, clean and dry place.
as near as practical to the battery under charge.
both (a) and (b).
wherever convenient.

⇒ During discharging of lead acid cells, the terminal voltage decreases with the decrease in
temperature.
discharge rate.
state of charge.
none of these.

⇒ The electric cell is a device to obtain
Electrons
Electric charge
Electric energy from chemical energy
Electric force

⇒ First electrochemical cell was designed by
Galvani
Faraday
Lechlanche
None of these

⇒ Addition of which of the following substances in electrolyte promotes smooth deposition?
Albumen.
Glucose.
Phenol.
Any of these.

⇒ The relative density of the electrolyte of acid accumulator should not be allowed to fall below
1.80
1.50
1.28
1.18

⇒ What happens during the discharging of Edison cell ?
Relative density of electrolyte decreases
The emf does not change
The emf decreases
Relative density increases

⇒ The energy capacity of a storage battery is rated in
kWh.
kW.
ampere hours.
joules.

⇒ In a lead acid battery, the level of the electrolyte should be
equal to that of the plates.
below the level of plates.
above the level of plates.
none of the above.

⇒ The amount of ions liberated by 96500 C of charge passed through the electrolyte is called ?
Electrochemical equivalent
Chemical equivalent
Gram equivalent
None of these

⇒ In which of the following cells polarisation is the major defect ?
Voltanic cell
Lechlanche cell
Daniel cell
None of these

⇒ The capacity of a lead acid battery is adversely affected by increase in
discharge rate.
charge rate.
temperature.
specific gravity of the electrolyte.

⇒ Common impurity in a battery electrolyte is
dust particles.
iron.
lead crystals.
sodium chloride.

⇒ A battery is connected to a resistance causing a current of 0.5 A in the circuit. The current drops to 0.4 A when an additional resistance of 5 ω is connected in series. The current will drop to 0.2 A when the resistance is further increased by
10 ω
15 ω
25 ω
40 ω

⇒ The emf of primary cell depends upon the
physical dimensions of a cell.
nature of electrolyte.
nature of electrode.
both (b) and (c).

⇒ Nickel-cadmium accumulators in comparison to nickel-iron accumulators have the advantages of
being lighter in weight and cheaper in cost.
low internal resistance and longer life.
higher emf and higher efficiency.
all of the above.

⇒ The current capacity of the charged secondary cell does not depend on
Rate of discharge
Temperature
Amount of active material
Rate of charging

⇒ What happens during the charging of acid cell ?
Voltage increases
Energy is given out
Both
None of these

⇒ For a group of cells when internal resistance of the group is equal to external load resistance, the group will deliver maximum
voltage.
current.
ampere-hours.
efficiency.

⇒ In a lead acid battery, separators are provided to
reduce internal resistance.
facilitate flow of the current.
avoid internal short circuits.
increase the energy efficiency.

⇒ Which of the following cells is more likely to be damaged due to short circuiting ?
Daniel cell
Dry Cell
Acid cell
Fuel cell

⇒ In a lead acid battery, fillers are provided to
facilitate flow of gasses
prevent flow of gasses.
recover acid losses through vapours.
reduce tendency for polarisation.

⇒ During charging and discharging of an Edison cell
electrolyte does not take part in chemical reaction.
emf remains the same.
corrosive fumes are produced.
nickel hydroxide remains unsplit.

⇒ The arrangement of 12 cells, each of internal resistance 1.5 ω, to give maximum current in external load resistance of 2 ω will be
all 12 cells in series.
all 12 cells in parallel.
4 cells in series with 3 rows in parallel.
3 cells in series with 4 rows in parallel.

⇒ A 24 V battery of internal resistance r = 4 ω connected to a variable resistance R. The rate of heat dissipation in the resistor is maximum when the current drawn from the battery is I. The current drawn from the battery will be 1/2 when R is equal to
8 ω
12 ω
16 ω
20 ω

⇒ What carries current in an electrolyte
Electrons only
- ve ions only
+ ve ions only
Both + ve and - ve ions

⇒ During electrodeposition. the amounts of different substances liberated by same quantity of electricity are proportional to
atomic weights.
valency.
chemical equivalents.
atomic numbers

⇒ During electroplating the weight of a substance deposited depends upon
shape of the article
quantity of electricity
room temperature
all of the above