An ideal current source is one whose internal resistance is infinite
Description : State the internal resistance of ideal current and ideal voltage source.
Last Answer : The internal resistance of ideal current and ideal voltage source: Ideal voltage source has zero internal resistance Ideal current source has infinite internal resistance
Description : The internal resistance of an ideal voltage source is : (A) Zero (B) Infinity (C) A finite value (D) None of the above
Last Answer : The internal resistance of an ideal voltage source is Zero
Description : The internal resistances of an ideal current source, and an ideal voltage source are, respectively, (A) 0, ∞ (B) ∞, ∞ (C) ∞, 0 (D) 0,0
Last Answer : The internal resistances of an ideal current source, and an ideal voltage source are, respectively, ∞, 0
Description : The ideal characteristic of a voltage stablizer is A) constant output voltage with low internal resistance B) constant output current with low internal resistance C) constant output voltage with high internal resistance D) constant internal resistance with variable output voltage.
Last Answer : A) constant output voltage with low internal resistance
Description : A source of e.m.f. `E = 15V` and having negligible internal resistance is connected to a variable resistance so that the current in the circuit increa
Last Answer : A source of e.m.f. `E = 15V` and having negligible internal resistance is connected to a variable resistance so that ... 10 C B. 20 C C. 30 C D. 40 C
Description : Moisture accumulating in electric motors and generator windings having a cold insulation resistance greater than 50,000 ohms may be baked out with internal heat. This heat can be developed by ____________. ... an electric welder and feeding it into the armature while running the motor at full speed
Last Answer : Answer: A
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
Last 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
Description : Consider the following statements : Any element connected in 1. Series with an ideal current source is redundant. 2. Parallel with an ideal current source is redundant. 3. Series with an ideal voltage ... with an ideal voltage source is redundant. Which of the above statements is/are correct ?
Last Answer : Series with an ideal current source is redundant. and Parallel with an ideal voltage source is redundant.
Description : Fing the reading of the ideal ammeter connected in the given circuit. Assume that the cells have negligible internal resistance.
Last Answer : Fing the reading of the ideal ammeter connected in the given circuit. Assume that the cells have negligible internal ... 25A` C. `1.95A` D. `1.0A`
Description : The angle of internal friction of soil mass is the angle whose (A) Tangent is equal to the rate of the maximum resistance to sliding on any internal inclined plane to the normal pressure acting on ... on any internal inclined plane to the normal pressure acting on the plane (D) None of these
Last Answer : Answer: Option A
Description : Internal resistance is the resistance offered by a. source of e m f b. Conductor c. Resistor d. Capacitor
Last Answer : a. source of e m f
Description : For maximum transfer of power, internal resistance of the source should be?
Last Answer : For maximum transfer of power, internal resistance of the source should be equal to load resistance.
Description : For high efficiency of transfer of power, internal resistance of the source should be?
Last Answer : For high efficiency of transfer of power, internal resistance of the source should be less than the load resistance.
Description : The amount of current flowing through a circuit with a 40 V source and 6.8 kΩ of resistance is equal to: A. 27.2 mA B. 59 mA C. 5.9 mA D. 590 mA
Last Answer : The amount of current flowing through a circuit with a 40 V source and 6.8 kΩ of resistance is equal to: 5.9 mA
Description : If the energy is supplied from a source, whose resistance is 1 ohm, to a load of 100 ohms the source will be?
Last Answer : If the energy is supplied from a source, whose resistance is 1 ohm, to a load of 100 ohms the source will be a voltage source.
Description : An ideal choke takes a current of 8A when connectd to an AC source of 100V and 50 Hz. A pure resistor under the same condition strikes a current of 10
Last Answer : An ideal choke takes a current of 8A when connectd to an AC source of 100V and 50 Hz. A pure ... resistor and inductor `sqrt(10x)`A. Find value of x
Description : Draw ideal and practical voltage source and current source.
Last Answer : Voltage Source: Current Source:
Description : Draw – (i) Practical voltage source (ii) Ideal current source
Last Answer : i) Practical voltage source ii) Ideal current source Where, Is = Current Source Rs = internal resistance of source
Description : Voltage Source and Current Source : Ideal and Practical
Last Answer : An ideal voltage source maintains constant voltage across its terminals regardless of the current flowing in those terminals. An ideal current source maintains constant current through its terminals regardless of the voltage across those terminals.
Description : Define 'Ideal voltage source' and 'Practical voltage source'. Draw the symbol for each.
Last Answer : i) Ideal voltage source: A voltage source whose terminal voltage always remains constant for all values of output current, is known as an ideal voltage source. It has zero internal resistance. ... the voltage drop in the internal resistance. Symbol of Practical Voltage Source:
Description : what is ideal voltage source?
Last Answer : 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 ... in universe it means ideal voltage source is this voltage source having internal resistance zero
Description : "Any number of current sources in parallel may be replaced by a single current source whose current is the algebraic sum of individual source currents and source resistance is the parallel combination of individual source resistances". The above statement is associated with?
Last Answer : "Any number of current sources in parallel may be replaced by a single current source whose current is the algebraic sum of individual source currents and source ... parallel combination of individual source resistances". The above statement is associated with Millman's theorem.
Description : How would you arrange 64 similar cells each having an emf of 2.0 V and internal resistance `2 Omega` so as to send maximum current through an external
Last Answer : How would you arrange 64 similar cells each having an emf of 2.0 V and internal resistance ` ... current through an external resistance of `8 Omega`.
Description : 10 cells, each of internal resistance `0.5 Omega` and 1.2 V emf are connected (a) all in series and (b) all in paralle. Calculate the current sent in
Last Answer : 10 cells, each of internal resistance `0.5 Omega` and 1.2 V emf are connected (a) all in ... each case through a wire of resistance `0.8 Omega`.
Description : The internal resistance of a `2.1 V` cell which gives a current `0.2 A` through a resistance of `10 Omega`
Last Answer : The internal resistance of a `2.1 V` cell which gives a current `0.2 A` through a resistance of `10 Omega` A ... Omega` C. `0.8 Omega` D. `1.0 Omega`
Description : The emf of a cell E is 15 V as shown in the figure with an internal resistance of `0.5Omega`. Then the value of the current drawn from the cell is
Last Answer : The emf of a cell E is 15 V as shown in the figure with an internal resistance of `0.5Omega`. Then the value of ... A. `3A` B. `2A` C. `5A` D. `1A`
Description : 24 cells of emf `1.5 V` each having internal resistance of 1 ohm are connected to an external resistance of `1.5` ohms. To get maximum current,
Last Answer : 24 cells of emf `1.5 V` each having internal resistance of 1 ohm are connected to an external ... in series and 4 such rows are connected in parallel
Description : Four cells, each of emf E and internal resistance r, are connected in series across an external resistance reverse. Then, the current in the external
Last Answer : Four cells, each of emf E and internal resistance r, are connected in series across an external resistance reverse. Then, ... (3r+R)` D. `(2E)/(3r+R)`
Description : Under what condition, the current passing through the resistance R can be increased by short - circuiting the battery of emf `E_2` The internal resist
Last Answer : Under what condition, the current passing through the resistance R can be increased by short - circuiting the battery of ... (1)r_(2)gtE_(2)(R+r_(1))`
Description : A battery of emf E has an internal resistance r. A variable resistacne R is connected to the terminals of the battery. A current `i` is drawn from the
Last Answer : A battery of emf E has an internal resistance r. A variable resistacne R is connected to the terminals of ... infinity, `(E)/(r)`, V approaches E
Description : A cell supplies a current `i_(1)` trhough a resistnace `R_(1)` and a current `i_(2)` through a resistance `R_(2)`. The internal resistance of this cel
Last Answer : A cell supplies a current `i_(1)` trhough a resistnace `R_(1)` and a current `i_(2)` through a resistance `R_(2 ... ))/(i_(1)-i_(2)))sqrt(R_(1)R_(2))`
Description : When used for taking resistance measurements, a volt-ohm-milliammeter is normally powered by _____________. A. a hand cranked generator B. internal storage batteries C. the current in the circuit being tested D. a step down transformer
Last Answer : Answer: B
Description : An ammeter with an internal resistance of 50 ohm(s) is used to measure a current thorugh a lod resistor Rl = 1 kohm(s). Determine the percentage error of the reading due to ammeter insertion.
Last Answer : 50/(50+1k)*100 = 4.76%
Description : A neon flashlight cell with an emf of 1.5V gives a current of 15A when connected directly to an ammeter of resistance 0.04?. Internal resistance of the cell is a. 0.0004? b. 0.06? c. 0.10? d. 0.13?
Last Answer : b. 0.06?
Description : The potential drop between the terminals of a battery is equal to the battery's EMF when: w) no current is drawn from the battery x) a very large current is drawn from the battery y) the internal resistance of the battery is very large z) the resistance in the external circuit is small
Last Answer : ANSWER: W -- NO CURRENT IS DRAWN FROM THE BATTERY
Description : An ammeter has a current change of 0-5A and its internal resistance is 0.2 ohm. In order to Change the range to 0-25 A, wear need to add a resistance of A) 0.8 ohm in series with the meter B) ... series with the meter C) 0.04 ohm in parallel with the meter D) 0.05 ohm in parallel with the meter
Last Answer : An ammeter has a current change of 0—5A and its internal resistance is 0.2 ohm. In order to Change the range to 0-25 A, wear need to add a resistance of 0.05 ohm in parallel with the meter
Description : The full-scale deflection current of an ammeter is 1 mA and its internal resistance is 100Ohm. This is to have full deflection when 100V is measured. What is the value of series resistor to be used?
Last Answer : The full-scale deflection current of an ammeter is 1 mA and its internal resistance is 100Ohm. This is to have full deflection when 100V is measured. 99.99 K ohms is the value of series resistor to be used.
Description : Define the following terms as referred to battery. a) E.M.F b) Internal resistance c) Ah efficiency d) WAh efficiency
Last Answer : a) E.M.F : The electromotive force of a battery is defined as the energy spent or the work done in taking a unit positive charge around the complete circuit of the battery i.e., in ... input required to restore the initial state of charge, under specified conditions, is called Watt-hr efficiency.
Description : Five cells, each with an e.m.f. of 2V and internal resistance of 0.5Ω are connected in series. The resulting battery will have
Last Answer : Five cells, each with an e.m.f. of 2V and internal resistance of 0.5Ω are connected in series. The resulting battery will have An e.m.f. of 10V and an internal resistance of 2.5 Ω
Last Answer : The internal resistance of the voltmeter must be very high in order to have Minimum current through the meter.
Last Answer : The internal resistance of a cell is Directly proportional to the electrolyte concentration, Inversely proportional to the electrodes plate area, Determined by the nature of electrolyte used.
Description : If an ideal gas is isothermally expanded, what will its internal energy?
Last Answer : Remain the same
Description : For an ideal gas, the internal energy depends upon its __________ only. (A) Molecular size (B) Temperature (C) Volume (D) Pressure
Last Answer : (B) Temperature
Description : In an ideal refrigeration cycle, the change in internal energy of the fluid is (A) +ve (B) -ve (C) 0 (D) Either of the above three; depends on the nature of refrigerant
Last Answer : (C) 0
Description : If the internal energy of an ideal gas decreases by the same amount as the work done by the system, then the (A) Process must be isobaric (B) Temperature must decrease (C) Process must be adiabatic (D) Both (B) and (C)
Last Answer : (D) Both (B) and (C)
Description : Internal energy of an ideal gas (A) Increases with increase in pressure (B) Decreases with increase in temperature (C) Is independent of temperature (D) None of these
Last Answer : D) None of these
Description : Pressure-enthalpy chart is useful in refrigeration. The change in internal energy of an ideal fluid used in ideal refrigeration cycle is (A) Positive (B) Negative (C) Zero (D) Infinity
Last Answer : C) Zero
Description : The internal energy of an ideal gas is a function of its __________ only. (A) Molecular size (B) Volume (C) Pressure (D) Temperature
Last Answer : (D) Temperature
Description : Pick out the correct statement. (A) Like internal energy and enthalpy, the absolute value of standard entropy for elementary substances is zero (B) Melting of ice involves increase in enthalpy and ... of an ideal gas depends only on its pressure (D) Maximum work is done under reversible conditions
Last Answer : (D) Maximum work is done under reversible conditions
Description : A fluid whose viscosity does not change with the rate of deformation or shear strain is known as (A) Real fluid (B) Ideal fluid (C) Newtonian fluid (D) Non-Newtonian fluid
Last Answer : Answer: Option C