Electrician Sem2 mod1 Cell and Batteries

Which device converts sunlight into electrical energy?

• Photo voltaic cell

• Liquid crystal diode

• Light emitting diode

• Light dependent resistor

Which law secondary cell works?

• Lenz’s law

• Joule’s law

• Faradays laws of electrolysis

• Faradays laws of electromagnetic induction

What is the formula to calculate the Mass deposited during electrolysis?

• M = it gm

• M = zit gm

• M = it/z gm

• M = z/it gm

How the capacity of batteries is specified?

• Volt

• Watt

• Volt Ampere

• Ampere hour

What is the name of defect that bending of plates in secondary cells?

• Buckling

• Local action

• Partial short

• Hard sulphation

What is the unit of electric charge?

• Volt

• Watt

• Ampere

• Coulomb

What is the output voltage of lithium cell?

• 1.2 V

• 1.5 V

• 1.8 V

• 2.5 V

What is the method of charging if the battery is to be charged for short duration at higher rate?

• Initial charge

• Boost charge

• Trickle charge

• I Freshening charge

Which electrolyte used in carbon zinc dry cells?

• Dilute sulphuric acid

• Ammonium chloride

• Potassium hydroxide

• Concentrated hydrochloric acid

Which effect causes by passing electric current in liquids?

• Heating

• Lighting

• Magnetic

• Chemical