An electrical network with six independent nodes has:
1.10 loop equations
2.3 loop equations
3.5 loop equations
4.7 loop equations
Posted Date:-2022-10-09 14:38:42
For maximum transfer of power, the internal resistance of the source should be
1.equal to load resistance
2.less than that of load
3.more than that of load
4.none of the above
Posted Date:-2022-10-09 14:58:20
In a series R-L-C circuit, R = 100 ohms, XL = 300 ohms and Xc = 200 ohms. The phase angle Ï• of the circuit is:
1.0 degrees
2.90 degrees
3.45 degrees
4.-45 degrees
Posted Date:-2022-10-09 15:06:36
In nodal analysis, if there are N nodes in the circuit, then how many equations will be written to solve the network?
1.N – 1
2.N + 1
3.N
4.N – 2
Posted Date:-2022-10-09 14:35:37
The superposition theorem requires as many circuits to be solved as there are
1.nodes
2.sources
3.nodes and sources
4.meshes
Posted Date:-2022-10-09 14:30:37
While determining RTH of a circuit
1.voltage and current sources should be left as they are
2.all sources should be replaced by their source resistances
3.all independent current and voltage sources are short-circuited
4.none of the above
Posted Date:-2022-10-09 14:52:07
A dependent source:
1.may be a current source or a voltage source
2.is always a voltage source
3.is always a current source
4.neither a current source nor a voltage source
Posted Date:-2022-10-09 12:53:04
A terminal where more than two branches meet is known as
1.node
2.terminus
3.anode
4.none of these
Posted Date:-2022-10-09 14:24:48
A Y arrangement of resistances has each resistance of 3 Ω. The equivalent delta arrangement will have each resistance of values
1.9 Ω
2.6 Ω
3. 3 Ω
4.1 Ω
Posted Date:-2022-10-09 15:00:38
According to Kirchhoff s voltage law, the algebraic sum of all IR drops and EMFs in any closed loop of a network is always
1.negative
2.positive
3.zero
4.determined by emfs of the batteries
Posted Date:-2022-10-09 14:27:44
For the circuit shown for Q.6, the current flowing through the circuit will be
1.1:5 A
2.1.0 A
3.0.5 A
4.0.75 A
Posted Date:-2022-10-09 14:20:32
How are 500 Ω resistors connected so as to give an effective resistance of 750 Ω?
1.Three resistors of 500 Ω each, in parallel
2.Three resistors of 500 Ω each, in series
3.Two resistors of 500 Ω each, in parallel
4.Two resistors of 500 Ω each, in parallel and the combination in series with another 500 Ω resistor
Posted Date:-2022-10-09 14:22:15
Ideal current sources have:
1.zero internal resistance
2.infinite internal resistance
3. low value of voltage
4.large value of current
Posted Date:-2022-10-09 12:51:52
Ideal voltage source should have:
1.zero internal resistance
2.infinite internal resistance
3.large value of EMF
4. low value of current
Posted Date:-2022-10-09 12:49:47
Ideal voltage sources have:
1.zero internal resistance
2.infinite internal resistance
3.large value of EMF
4. low value of current
Posted Date:-2022-10-09 12:50:42
If in the delta, RC = 2 Rb, Rb = Ra, then the star resistance in the above question will be
1.Rb/2
2.2Rb
3.Rc
4.Rc/2
Posted Date:-2022-10-09 14:59:35
Kirchhoff’s voltage law is concerned with:
1.IR drop
2.battery emfs
3.junction voltage
4.both IR drop and battery emfs
Posted Date:-2022-10-09 14:26:08
Maxwell’s loop current method of solving electrical networks:
1.uses branch currents
2.utilizes Kirchhoff’s voltage law
3.is confined to single-loop circuits
4.is a network reduction method
Posted Date:-2022-10-09 14:31:56
Mesh analysis is based on:
1.KVL
2.KCL
3.both
4.law of conservation of energy
Posted Date:-2022-10-09 14:32:48
Nodal analysis is based on:
1.KCL
2.KVL
3.both
4.law of conservation of energy
Posted Date:-2022-10-09 14:34:44
Point out the wrong statement. In the node voltage technique of solving networks, the choice of a reference node does not:
1.affect the operation of the circuit
2.change the voltage across any element
3.alter the pd between any pair of nodes
4.affect the voltages of various nodes
Posted Date:-2022-10-09 14:41:29
The algebraic sign of an IR drop primarily depends upon the
1.direction of flow of current
2.battery connections
3.magnitude of current flowing through it
4.value of resistance
Posted Date:-2022-10-09 14:29:36
Thevenin’s resistance RTH is determined
1.by short-circuiting the given two terminals
2.by removing the voltage sources along with their internal resistances
3.between same open terminals as for VTH
4.between any two open terminals
Posted Date:-2022-10-09 14:50:48
Three equal resistances are connected in the star. If this star is converted into an equivalent delta
1.The resistance of both the networks will be equal
2.the resistances of the delta network will be smaller than those of star network
3.the resistances of the delta network will be larger than those of star network
4.none of the above
Posted Date:-2022-10-09 15:01:47
Three resistances each of R Ω are connected to form a triangle. The resistance between any two terminals will be:
1.RΩ
2.3/2 RΩ
3.3 RΩ
4.2/3 RΩ
Posted Date:-2022-10-09 12:53:55
When the power transferred to the load is maximum, the efficiency of power transfer is:
1.25%
2.50%
3.75%
4.100%
Posted Date:-2022-10-09 14:57:03
Which of the following is an active element in a circuit?
1.Current source
2.Resistance
3.Inductance
4.Capacitance
Posted Date:-2022-10-09 14:23:46
Which of the following statements is/are correct
1.Norton’s equivalent resistance is the same as Thevenin’s equivalent resistance RTH
2.Norton’s equivalent is the current equivalent of the network
3.The load is connected in parallel to the Norton’s equivalent resistance and Norton’s equivalent current source
4.all of the above
Posted Date:-2022-10-09 14:54:28
While determining RTH in Thevenin’s and Norton’s equivalent
1.only current sources are made dead
2.only voltage sources are made dead
3.all independent sources are made dead
4.all current and voltage sources are made dead
Posted Date:-2022-10-09 14:56:05
While Thevenizing a circuit between two terminals, VTH is equal to
1.short-circuit terminal voltage
2.open-circuit terminal voltage
3.net voltage available in the circuit
4.emf of the battery nearest to the terminals
Posted Date:-2022-10-09 14:48:17