Index

SymbolsTransformerRelayPower-SystemBasic-electricalACSR-ConductorCircuit-BreakerInterview-questions-of-Basic-ElectricityInterview-questions-of-transformerInsulatorCurrent-TransformerMCQMCQ-powersystemThermal-power-stationInterview-questions-of-Power-SystemPower-ElectronicsInterview-questions-of-Underground-CableInterview-questions-of-IlluminationIlluminationMCQ-of-ElectronicsMCQ-of-Basic-ElectricalMCQ-of-Transformers MCQ-of-D.C-motor MCQ-of-D.C-generatorsMCQ-Control-SystemMCQ-Measurementsmcq-of-Generation-power-systemMCQ-of-Induction-MotorMCQ-of-Transmission-DistributionMCQ-of-Electrical-MachinesMCQ-of-Alternator-and-Synchronous-MotorsMCQ-Electric-PowerMCQ-Illumination

Multiple Choice Question (MCQ) of battery page-14


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131. During electroplating the weight of a substance deposited depends on

A) atmospheric humidity
B) room temperature
C) shape of the article
D) quantity of electricity.

Ans : (D)

132. Which laws find application is electrolysis?

A) Van Allen’s laws
B) Faraday’s laws
C) Coulomb’s laws
D) Ohm’s laws.

Ans : (B)

133. A battery whose emf is 45 volts is connected to a 20 ohm resistance and a current of 2.1 Amp. flows. The terminal voltage is

A) 42 V
B) 45 V
C) 54 V
D) 40 V

Ans : (A)

134. A cell of EMF E is connected across an external resistance r. Terminal voltage is V. The internal resistance b of the cell is given be

A) ( E - V ) r
B) 2 ( E-V/V ) r
C) ( E-V/E ) r
D) ( E-V/V ) r.

Ans : (D)

135. Which of the following is plated by barrel plating?

A) All pins
B) Gems clip
C) Steel balls
D) All of the above.

Ans : (D)

136. Voltage required for barrel plating is usually

A) 3 to 5 volts
B) 6 to 16 volts
C) 20 to 50 volts
D) 50 to 200 volts.

Ans : (B)

137. EMF of cell depends upon

A) External resistance
B) Internal resistance
C) Electrolyte & electrodes
D) Area of plates inside electrolyte.

Ans : (C)

138. A external resistance R is connected to a cell of internal resistance r, then the current is maximum when

A) R < r
B) R > r
C) R = r
D) none of the above.

Ans : (C)

139. Zinc plating solution consists of

A) Zinc sulphate and dilute sulphuric acid
B) Zinc chloride and ammonium hydroxide
C) Zinc, sodium cyanide and sodium hydroxide solution
D) any of the above.

Ans : (C)

140. For cadmium plating electrolyte used is

A) sodium cyanide, cadmium and caustic soda
B) cadmium hexa meta phosphate
C) cadmium sulphate and sulphuric acid
D) any of the above.

Ans : (A)


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