Electrical Engineering Mcqs
Which of the following statement is true________________?

A. A galvanometer with low resistance in parallel is a voltmeter
B. A galvanometer with high resistance in parallel is a voltmeter
C. A galvanometer with low resistance in series is an ammeter
D. A galvanometer with high resistance in series is an ammeter

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

Three 60 W bulbs are in parallel across the 60 V power line. If one bulb burns open_________________?

A. there will be heavy current in the main line
B. rest of the two bulbs will not light
C. all three bulbs will light
D. the other two bulbs will light

The four bulbs of 40 W each are connected in series swift a battery across them, which of the following statement is true_______________?

A. The current through each bulb in same
B. The voltage across each bulb is not same
C. The power dissipation in each bulb is not same
D. None of the above

A closed switch has a resistance of_____________?

A. zero
B. about 50 ohms
C. about 500 ohms
D. infinity

The insulation on a current carrying conductor is provided__________?

A. to prevent leakage of current
B. to prevent shock
C. both of above factors
D. none of above factors