Basic Electrical MCQs with answers PDF, DAE Electrical MCQs with Answers PDF. Basic Electrical MCQs for PPSC, FPSC, NTS, KPPSC, WAPDA, Railways, SPSC, MES.
What is constant for a charged spherical shell according to basic electrical energy ?
A. Electrical field outside the spherical shell
B. Electrical field inside the spherical shell
C. Electrical potential inside the spherical shell
D. Electrical potential outside the spherical shellThe main function of a fuse is to _____ ?
A. open the circuit
B. protect the appliance
C. prevent excessive currents
D. protect the lineWhen a lead-acid battery is in fully charged condition, the colour of its positive plate is ____ ?
A. dark brown
B. brown
C. dark grey
D. All of themThe best indication about the state of charge on a lead-acid battery is given by:
A. specific gravity of electrolyte
B. temperature of electrolyte
C. output voltage
D. NoneThe storage battery generally used in electric power station is ____ ?
A. Latin
B. lead-acid battery
C. nickel-cadmium battery
D. ArabicThe output voltage of a charger should be ____ ?
A. higher than the battery voltage
B. the same as the battery voltage
C. less than the battery voltage
D. none of the aboveCells are connected in series in order to ____ ?
A. increase the life of the cells
B. increase the voltage rating
C. increase the current rating
D. None of themThe watt-hour efficiency of a lead-acid cell varies between ____ ?
A. 90 to 95%
B. 70 to 80%
C. 25 to 35%
D. 40 to 60%The ampere-hour efficiency of a lead acid cell is normally between:
A. 40 to 50%
B. 60 to 70%
C. 20 to 30%
D. 90 to 95%When the lead-acid cell is fully charged, the electrolyte assumes ______ appearance.
A. reddish
B. bright
C. milky
D. dull