ACES EE DC Circuits

The superposition theorem requires as many circuits to be solved as there are

• sources, nodes and meshes

• sources and nodes

• sources

• nodes

A delta circuit has each element of value R/2. The equivalent elements of star circuit will be

• R/6

• R/3

• 2R

• 3R

A star circuit has element of resistance R/2. The equivalent delta elements will be

• R/6

• 3/2 R

• 2R

• 3R

If a circuit does not contain any source of energy or e.m.f., it is known as

• unilateral circuit

• bilateral circuit

• passive network

• active network

The circuit whose properties are same in either direction is known as

• unilateral circuit

• bilateral circuit

• irreversible circuit

• reversible circuit

For maximum transfer of power, internal resistance of the source should be

• equal to load resistance

• less than the load resistance

• greater than the load resistance

• none of the above

Efficiency of power transfer when maximum transfer of power occurs is

• 100%

• 80%

• 75%

• 50%

In a delta network each elements has value R. The value of each element in equivalent star network will be

• R/6

• R/4

• R/2

• R/3

Which of the following is non-linear parameter?

• inductance

• condenser

• wire wound resistor

• transistor

An ideal voltage voltage source should have

• large value of e.m.f.

• small value of e.m.f.

• zero source resistance

• infinite source resistance