74. Sparking occurs when a load is switched off because the circuit has high_________?

Related Mcqs:

1. In a lamp load when more than one lamp are switched on the total resistance of the load_____________?

   A. increases
   B. decreases
   C. remains same
   D. none of the above

2. If 1 A current flows in a circuit, the number of electrons flowing through this circuit is

   A. 0.625 × 10¹⁹
   B. 1.6 × 10¹⁹
   C. 1.6 × 10-¹⁹
   D. 0.625 × 10-¹⁹

3. When a voltage of one volt is applied, a circuit allows one micro ampere current to flow through it. The conductance of the circuit is___________?

   A. 1 n-mho
   B. 106 mho
   C. 1 milli-mho
   D. none of the above

4. How many coulombs of charge flow through a circuit carrying a current of 10 A in 1 minute?

   A. 10
   B. 60
   C. 600
   D. 1200

5. In a series circuit with unequal resistances______________?

   A. the highest resistance has the most of the current through it
   B. the lowest resistance has the highest voltage drop
   C. the lowest resistance has the highest current
   D. the highest resistance has the highest voltage drop

6. If a parallel circuit is opened in the main line, the current_______________?

   A. increases in the branch of the lowest resistance
   B. increases in each branch
   C. is zero in all branches
   D. is zero in the highest resistive branch

7. Which of the following quantities remain the same in all parts of a series circuit ____________?

   A. Voltage
   B. Current
   C. Power
   D. Resistance

8. Electric current passing through the circuit produces_____________?

   A. magnetic effect
   B. luminous effect
   C. thermal effect
   D. chemical effect
   E. all above effects

9. Whether circuit may be AC. or D. C. one, following is most effective in reducing the magnitude of the current?

   A. Reactor
   B. Capacitor
   C. Inductor
   D. Resistor

10. When one leg of parallel circuit is opened out the total current will______________?

    A. reduce
    B. increase
    C. decrease
    D. become zero