every voltage source have their own resistance that is called as internal resistance it is because of the resistance of electrodes and electrolytes in the battery interms of other supplyit have 1 resistance of generating equipments hence there is no ideal voltage source present in universe it means ideal voltage source is this voltage source having internal resistance zero

answered
Feb 8, 2018
by
NITIN DESHMUKH

Description : The internal resistances of an ideal current source, and an ideal voltage source are, respectively, (A) 0, ∞ (B) ∞, ∞ (C) ∞, 0 (D) 0,0

**Answer** : The internal resistances of an ideal current source, and an ideal voltage source are, respectively, ∞, 0

Description : An ideal voltage source has?

**Answer** : An ideal voltage source has zero internal resistance.

Description : An ideal voltage source should have?

**Answer** : An ideal voltage source should have zero source resistance.

Description : A network contains linear resistors and ideal voltage sources. If values of all the resistors are doubled then the voltage across each resistor will

**Answer** : A network contains linear resistors and ideal voltage sources. If values of all the resistors are doubled then the voltage across each resistor will not change

Description : Consider a circuit with four resistors in series connected to a voltage source. What happens to the voltage across each resistor, if the value of each of the resistors is doubled? A) It will double B) It will remain the same C) It will be halved D) It will become zero

**Answer** : Consider a circuit with four resistors in series connected to a voltage source. What happens to the voltage across each resistor, if the value of each of the resistors is doubled? A) It will double B) It will remain the same C) It will be halved D) It will become zero

Description : An independent voltage source in series with an impedance ZS=R+jXS delivers a maximum average power to a load impedance ZL when A) ZL = R B) ZL = jXS C) ZL = R-jXS D) ZL = R+jXS

**Answer** : An independent voltage source in series with an impedance ZS=R+jXS delivers a maximum average power to a load impedance ZL when ZL = R-jXS

Description : A 3-phase voltage source inverter operates in 180° conduction mode with a star connected resistive load. If input dc voltage is 100 V, then the peak to peak output line voltage is :

**Answer** : A 3-phase voltage source inverter operates in 180° conduction mode with a star connected resistive load. If input dc voltage is 100 V, then the peak to peak output line voltage is : 200 V

Description : A current controlled voltage source is equivalent to : (A) series voltage feed -back amplifier (B) shunt current feed -back amplifier (C) shunt voltage feed -back amplifier (D) series current feed -back amplifier

**Answer** : A current controlled voltage source is equivalent to : shunt voltage feed -back amplifier

Description : A network that consists of at least a voltage source or current source is called A) Active network B) Ideal network C) Sourced network D) Outsourced network

**Answer** : A network that consists of at least a voltage source or current source is called Active network

Description : What is Voltage Source Inverter (VSI) ?

**Answer** : Voltage Source Inverter (VSI) Inverter is device which converts Direct Current (DC) to Alternating Current (AC). There are two types of inverters one is Voltage source inverter ... VSI consist of two load terminals and three phase VSI consist of three load terminals.

Description : Nodal Analysis with Voltage Sources dependent voltage source and two supernode

**Answer** : Nodal Analysis with Voltage Sources dependent voltage source and two supernode

Description : Find power delivered by voltage source

**Answer** : Find power delivered by voltage source

Description : Source transformation Replace the circuit with voltage source in series with a single resistor

**Answer** : Source transformation Replace the circuit with voltage source in series with a single resistor

Description : Source transformation voltage source to current source and vice versa

**Answer** : Source transformation voltage source to current source and vice versa

Description : A voltage source inverter will have better performance if its (1) load inductance is small and source inductance is large. (2) both load and source inductance are small. (3) both load and source inductances are large. (4) load inductance is large and source inductance is small.

**Answer** : A voltage source inverter will have better performance if its load inductance is large and source inductance is small.

Description : A voltage source inverter is normally employed when (1) source inductance is large and load inductance is small (2) source inductance is small and load inductance is large (3) both source and load inductance are small (4) both source and load inductance are large

**Answer** : 3

Description : A DC voltage source is connected across a series RLC circuit. Under steady-state conditions, the applied DC voltage drops entirely across the

**Answer** : A DC voltage source is connected across a series RLC circuit. Under steady-state conditions, the applied DC voltage drops entirely across the C only

Description : Which of the following theorems enables a number of voltage (or current) source to be combined directly into a single voltage (or current) source. (1) compensation theorem (2) reciprocity theorem (3) superposition theorem (4) Millman's theorem

**Answer** : Which of the following theorems enables a number of voltage (or current) source to be combined directly into a single voltage (or current) source. (1) compensation theorem (2) reciprocity theorem (3) superposition theorem (4) Millman's theorem

Description : In voltage source converter based HVDC transmission system the active power is controlled by changing (A) phase angle of the converter ac input voltage (B) supply frequency of the converter ac input voltage (C) magnitude of the converter ac input voltage (D) DC voltage at the inverter terminals

**Answer** : In voltage source converter based HVDC transmission system the active power is controlled by changing phase angle of the converter ac input voltage

Description : For a voltage source?

**Answer** : For a voltage source terminal voltage cannot be higher than source e.m.f.

Description : Justify. Power MOSFET is operated at high enough gate source voltage to minimize the conduction losses.

**Answer** : MOSFET is metal oxide field effect transistor. MOSFET is a voltage controlled device. MOSFET is majority carrier device. MOSFET are of two one is n-channel MOSFET and p-channel MOSFET. Gate, ... . Hence, power MOSFET is operated at high enough gate-source voltage to minimize the conduction losses.

Description : Two resistances Rl and Ri are connected in series across the voltage source where Rl>Ri. The largest drop will be across?

**Answer** : Two resistances Rl and Ri are connected in series across the voltage source where Rl>Ri. The largest drop will be across Rl.

Description : What should be the ideal resistance of ammeter ?

**Answer** : Ideal resistance of ammeter should be zero.

Description : What are the desirable characteristics of ideal switch?

**Answer** : Desirable characteristics of the ideal switch: It is desirable to have power switches characteristics closer to ideal switch. The ideal switch should have the following characteristics. Zero resistance when ... . 100% efficiency. Able to control power flow with zero power dissipation.

Description : The gain of an ideal amplifier must be

**Answer** : The gain of an ideal amplifier must be infinity

**Answer** : An ideal traction system should have easy speed control, high starting tractive effort, equipment capable of with standing large temporary loads.

**Answer** : An ideal transformer is one which has no losses and magnetic leakage.

**Answer** : An ideal transformer will have maximum efficiency at a load such that copper loss equal to iron loss.

Description : What is renewable source of energy? State two examples for the same.

**Answer** : Renewable (Primary) Energy sources: It is defined as the sources that can be used again and again for the generation of electrical energy are called renewable. Following are the some list ... ) and carbon dioxide 6. Geothermal Energy Geothermal Electricity Production 7. Fuel Cells

Description : what is the source of energy for satellite ?

**Answer** : The source of energy for the satellites are its solar panels which generate power by themselves. But, to reach the orbit , it uses the fuel to push the rocket . It needs fuel to power the ... solar panels , hence solar power is produced which is ud=sed to power the internal use of satellite.

Description : A d.c. source has an open circuit voltage of 30 V and an internal resistance of 1.5 Ohm. A resistive load is connected to the source. Maximum power dissipated in the load is (A) 300 W (B) 150 W (C) 45 W (D) 20 W

**Answer** : A d.c. source has an open circuit voltage of 30 V and an internal resistance of 1.5 Ohm. A resistive load is connected to the source. Maximum power dissipated in the load is 150 W

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