A. 37
B. 42
C. 63
D. 73
Related Mcqs:
- The time constant of an R-C circuit is defined as the time during which capacitor charging voltage actually rises to _________ percent of its value
A. 37, initial
B. 62, initial
C. 62, final
D. 37, final - The capacitance C is charged through a resistance R. The time constant of the charging circuit is given by__________?
A. CIR
B. 1/RC
C. RC
D. RIC - If A.C. voltage is applied to capacitive circuit, the alternating current can flow in the circuit because__________________?
A. varying voltage produces the charging and dicharging currents
B. of high peak value
C. charging current can flow
D. discharge current can flow - A capacitance of 100 fiF is connected in series with a resistance of 8000 £2. The time constant of the circuit is______________?
A. 0.2 s
B. 0.4 s
C. 0.6 s
D. 0.8 s - Voltage applied across a ceramic dielectric produces an electrolytic field 100 times greater than air. What will be the value of dielectric constant ________?
A. 50
B. 100
C. 150
D. 200 - While testing a capacitor with ohm meter, if the capacitor shows charging, but the final resistance reading is appreciably less than normal, it can be concluded that the capacitor is____________?
A. short-circuited
B. open circuited
C. alright
D. leaky - at a point may be defined as equal to the lines of force passing normally through a unit cross section at that point ?
A. Electric intensity
B. Magnetic flux density
C. Electric flux
D. None of the above - Which of the following material has least value of dielectric constant ?
A. Ceramics
B. Oil
C. Glass
D. Paper - The value of dielectric constant for vacuum is taken as____________?
A. zero
B. 1
C. 4
D. 10 - A capacitor in a circuit became hot and ultimately exploded due to wrong connections, which type of capacitor it could be ?
A. Paper capacitor
B. Ceramic capacitor
C. Electrolytic capacitor
D. Any-of the above
