Basic Electrical MCQs with answers in PDF format, DAE Electrical MCQs with answers in PDF format, and Basic Electrical Engineering MCQs for PPSC, FPSC, NTS, KPPSC, WAPDA, Railways, SPSC, and MES exams.
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