Commercial Electrical Circuits

Q. The number of ways one can arrange three identical capacitors to obtain distinct capacitances is

Q. The number of wires in a three phase supply line is

1. 3 live wires and 3 neutral wires
2. 3 live wires and 0 neutral wire
3. 1 live wire and 3 neutral wires
4. 3 live wires and 1 neutral wire

Q. When 6 identical cells of negligible internal resistance are connected in secondary circuit of a potentiometer the balancing length is 1 balancing length becomes 1/3 when some cells are connected wrongly the number of cells connected wrongly are

Q. Electrical appliances have common positive and common negative terminal in parallel circuits.

1. True
2. False

Q. What is the required minimum quantity of power consumption for any consumer to qualify for commercial supply?

1. 5, 000 watts
2. 2 kilo watts
3. 3 kilo watts
4. 2500 Joules per second

Q.

The____________wire is connected to the negative terminal of the mains supply.

Q. Minimum numbers of 8 microfaradand 250 V capacitors used to make a combination of 16 microfarad and 1000 V will be?

Q. ntProve that the capacitance of a parallel plate capacitor reduces when it is connected with another capacitor in series.n

Q. Draw a circuit diagram showing a collection of six cells connected with three bulbs which in turn are connected in a parallel circuit with each other. Each bulb has its own switch. Show the arrangement in such a way that one bulb glows and the other two do not.

Q. If you're talking about electricity, what does "DC" stand for?

1. Direct Current
2. Dry Current
3. Double Current
4. Dead Current