Cells are connected in series in order to?

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asked Mar 16, 2018 by anonymous

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Two 100W, 200V lamps are connected in series across a 200V supply. The total power

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asked Apr 29, 2018 by anonymous

What is the total resistance if 5 resistors of 20 Ω each are connected in series?

What is the total resistance if 5 resistors of 20 Ω each are connected in series? A) 100 Ω B) 4 Ω C) 20 Ω D) None of these

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asked Mar 8, 2018 by anonymous

How to make power bank from laptop battery cells?

Last answer: You can make the power bank from laptop battery cells. Things you need to make power bank from laptop battery cells: Laptop battery cells (about 6 in parallel) Universal Dual USB 5V 1A 2.1A New Hot ... If you have any doubt ask it. Thanks...

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asked May 1, 2018 by anonymous

In order to regulate steady state error to zero, in a negative feedback control system, one employs

Last answer: In order to regulate steady state error to zero, in a negative feedback control system, one employs Integral control

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asked Mar 25, 2018 by anonymous

Two resistors are said to be connected in series when?

Last answer: Two resistors are said to be connected in series when same current passes in turn through both.

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asked Mar 20, 2018 by anonymous

In a A.C. series motor armature coils are usually connected to commutator?

Last answer: In a A.C. series motor armature coils are usually connected to commutator through resistance.

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asked Jan 24, 2020 by anonymous

what is equivalent resistance when four 4 Ohm resistors are connected in i) series ii) parallel

Last answer: equivalent resistance

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asked May 3, 2018 by anonymous

A transfer function has a second order denominator and constant gain in the numerator

Last answer: A transfer function has a second order denominator and constant gain in the numerator the system has two zeros at infinity

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asked Apr 28, 2018 by anonymous

A second order system shows 100% overshoot in its unit step response. It can be categorized as

A second order system shows 100% overshoot in its unit step response. It can be categorized as (A) underdamped system. (B) overdamped system. (C) Critically damped system. (D) undamped system.

Last answer: A second order system shows 100% overshoot in its unit step response. It can be categorized as undamped system.

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asked Mar 20, 2018 by anonymous

In D.C. machines the residual magnetism is of the order of?

Last answer: In D.C. machines the residual magnetism is of the order of 2 to 3 percent.

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asked Sep 7, 2018 by anonymous

State the principle of solar cell. What is necessity of series and parallel connection of solar cells.

Last answer: Principle of solar cell:- Working:- Solar cell operates on principle of Photo-voltaic effect Solar cell works in following steps: The solar cell is composed of a P-type ... of Voltage & Current rating it is necessity of connecting series and parallel connection of solar cells.

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asked May 8, 2018 by anonymous

We connected a 35V dc supply to a resistance of 600 Ohm in series with an unknown resistance

We connected a 35V dc supply to a resistance of 600 Ohm in series with an unknown resistance R.A. voltmeter having a resistance of 1.2 kOhm is connected across 600 Ohm resistance and read 5v. The value of resistance R will be

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asked Apr 29, 2018 by anonymous

Consider a circuit with four resistors in series connected to a voltage source. What happens to the voltage

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

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asked Mar 25, 2018 by anonymous

Two resistances Rl and Ri are connected in series across the voltage...

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

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

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asked Mar 20, 2018 by anonymous

When two D.C. series motors are connected in parallel, the resultant speed is?

Last answer: When two D.C. series motors are connected in parallel, the resultant speed is normal speed.

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asked May 8, 2018 by anonymous

Three identical resistors connected in star consume 5000 W. If the resistors are connected in

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asked Apr 29, 2018 by anonymous

When three resistors with unequal values are connected in parallel, _______

When three resistors with unequal values are connected in parallel, _______ A) The current across the resistors is the same B) The voltage drop across the resistors is the same C) The voltage drops across the resistors is proportional to the resistance of each resistor D) None of these

Last answer: When three resistors with unequal values are connected in parallel, The voltage drop across the resistors is the same

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70 views 1 answer

asked Jun 18, 2018 by anonymous

An inductor is connected in series with SCR to protect it from

An inductor is connected in series with SCR to protect it from A) Excessive high voltage B) Excessive high dv/dt C) Excessive high di/dt D) Excessive large forward current

Last answer: An inductor is connected in series with SCR to protect it from Excessive high di/dt

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asked Apr 28, 2018 by anonymous

The sequence components of current of a single-phase load connected to a 3-phase system are

The sequence components of current of a single-phase load connected to a 3-phase system are (A) equal positive and negative sequence components (B) equal positive, negative and zero sequence components (C) vector sum of sequence currents is zero (D) algebraic sum of sequence currents is zero

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asked Apr 28, 2018 by anonymous

If non-linear loads are connected to the power system, then

If non-linear loads are connected to the power system, then (A) displacement power factor is same as the total power factor (B) displacement power factor is not equal to the total power factor (C) displacement power factor is due to harmonic currents (D) total power factor is due to fundamental component of current

Last answer: If non-linear loads are connected to the power system, then displacement power factor is not equal to the total power factor

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asked May 8, 2018 by anonymous

In an R-C phase shift oscillator, the minimum no. of R-C networks to be connected in cascade will be -

Last answer: In an R-C phase shift oscillator, the minimum no. of R-C networks to be connected in cascade will be 3

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asked Mar 20, 2018 by anonymous

When a D.C. series motor is connected to A.C. supply, the power factor will be low because of?

Last answer: When a D.C. series motor is connected to A.C. supply, the power factor will be low because of high inductance of field and armature circuits.

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asked Sep 4, 2019 by anonymous

role of the series resistance connected in PMMC movement.

Last answer: A PMMC Instrument can be used as voltmeter by just connecting a series resistance with the moving coil. This series resistance is called Voltmeter Multiplier. This combination of moving coil and ... current whose voltage is to be measured. Ideally the resistance of voltmeter should be infinite

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asked Mar 25, 2018 by anonymous

A 40 W bulb is connected in series with a room heater. If now 40 W bulb is replaced by...

A 40 W bulb is connected in series with a room heater. If now 40 W bulb is replaced by 100 W bulb, the heater output will?

Last answer: A 40 W bulb is connected in series with a room heater. If now 40 W bulb is replaced by 100 W bulb, the heater output will increase.

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asked Apr 29, 2018 by anonymous

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

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asked May 14, 2018 by anonymous

Five cells, each with an e.m.f. of 2V and internal resistance of 0.5Ω are connected in series.

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

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asked Sep 22, 2018 by anonymous

Define the following terms related to tariff: (i) Connected load (ii) Unit consumed (iii) Fixed charges (iv) Electricity Tax

Last answer: (i) Connected load It is the sum of the power ratings (Watts or kW or MW) of all devices and machines existing (installed) in the premises of consumer. It is used to decide the ... a percentage of the total electricity bill which includes all amounts that go to the electricity supply agency.

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asked Apr 26, 2018 by anonymous

Series reactors are used to

Last answer: Series reactors are used to bring down the fault level within the capacity of the switchgear

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asked Mar 20, 2018 by anonymous

Series capacitors are used to?

Last answer: Series capacitors are used to compensate for line inductive reactance.

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asked Sep 7, 2018 by anonymous

Define each of following terms: i) Connected load ii) Spinning reserve.

Last answer: i) Connected Load :- It is the sum of load of all equipment connected to supply system which are in use or not in use of each consumer. ii) Spinning Reserve:- It is reserved generating capacity in operation and connected to bus bar and ready to take a load.

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asked Jun 18, 2018 by anonymous

A connected graph has ‘5’ number of branches and ‘4’ number of nodes. It's rank is

A connected graph has ‘5’ number of branches and ‘4’ number of nodes. It's rank is A) 1 B) 2 C) 3 D) 4

Last answer: A connected graph has ‘5’ number of branches and ‘4’ number of nodes. It's rank is 3

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asked Apr 29, 2018 by anonymous

Consider a circuit with three parallel branches connected across a DC supply. What is the ratio of the branch

Consider a circuit with three parallel branches connected across a DC supply. What is the ratio of the branch currents I1 : I2 : I3 if the branch resistances are in the ratio of 2 : 3 : 4 respectively? A) 2 : 3 : 4 B) 6 : 4 : 3 C) 4 : 3 : 2 D) None of these

Last answer: Consider a circuit with three parallel branches connected across a DC supply. What is the ratio of the branch currents I1 : I2 : I3 if the branch resistances are in the ratio of 2 : 3 : 4 respectively? A) 2 : 3 : 4 B) 6 : 4 : 3 C) 4 : 3 : 2 D) None of these

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asked Jun 18, 2018 by anonymous

An independent voltage source in series with an impedance ZS=R+jXS delivers a maximum average power to

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

Last 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

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asked Mar 25, 2018 by anonymous

In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value?

Last answer: In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value will increase the selectivity of the circuit.

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398 views 1 answer

asked Aug 12, 2018 by anonymous

A balanced Delta connected load supplied with 440 V 50 Hz three phase AC supply has R=10 Ohm and L=0.6 mH in is each arm. Calculate line and phase current, active power.

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173 views 0 answers

asked Apr 30, 2018 by anonymous

A four -quadrant operation requires two full converters connected in

A four -quadrant operation requires two full converters connected in (1) Series (3) Back to back (2) Parallel (4) Series Cascade

Last answer: A four-quadrant operation requires two full converters connected in Parallel

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476 views 1 answer

asked Mar 25, 2018 by anonymous

With three resistances connected in parallel, if each dissipates 20 W the ...

With three resistances connected in parallel, if each dissipates 20 W the total power supplied by the voltage source equals?

Last answer: Power is the only thing which is additive in both connection whether it is parallel or series connection so total power consumed will addition of all individual power =20+20+20 = 60 watt

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640 views 2 answers

asked May 8, 2018 by anonymous

A series R-L-C Circuit has a resonant frequency of 1000 Hz. If the values of R, L and C are

A series R-L-C Circuit has a resonant frequency of 1000 Hz. If the values of R, L and C are doubled, the new resonant frequency is

Last answer: A series R-L-C Circuit has a resonant frequency of 1000 Hz. If the values of R, L and C are doubled, the new resonant frequency is 500 Hz

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148 views 1 answer

asked Mar 15, 2018 by anonymous

What are the advantages of DC series motor?

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asked Mar 21, 2018 by anonymous

When two D.C. series generators are running in parallel, an equilizer bar is used?

Last answer: If equalising bar is connected to the 2 DC generators the current will be equal in 2 generators irrespective of parallel connection so that we connect equaliser bar

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asked Jul 24, 2019 by anonymous

Explain the concept of following terms : (i) Connected load (ii) Maximum demand

Last answer: 1. Connected Load: It is the sum of load of all equipment's connected to supply system which are in use or not in use of each consumer. OR The sum of connected load of all consumers ... is the maximum load which a consumer uses at a particular time period out of his total connected load.

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61 views 1 answer

asked Sep 29, 2018 by anonymous

Define the terms: i) Tariff ii) Fuel surcharge iii) Electricity Duty iv) Connected load

Last answer: i) Tariff: The rate at which a consumer is charged for the consumption of electricity is called as tariff. OR The amount of money framed by the supplier for the supply of electrical energy ... is the total wattage of all appliances which are used by the consumer on his sanctioned connection.

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95 views 1 answer

asked Aug 11, 2018 by anonymous

Draw the phasor diagram for Star connected balanced system.

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asked Aug 11, 2018 by anonymous

Draw the Delta connected three phase system showing all the voltages and currents.

Draw the Delta connected three phase system showing all the voltages and currents. Write the power equation.

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80 views 0 answers

asked Mar 20, 2018 by anonymous

If a D.C. motor is connected across the A.C. supply it will?

Last answer: If a D.C. motor is connected across the A.C. supply it will burn due to heat produced in the field winding by eddy currents.

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75 views 1 answer

asked Mar 20, 2018 by anonymous

A fuse is connected?

Last answer: A fuse is connected in series with circuit.

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67 views 1 answer

asked Mar 7, 2018 by anonymous

Explain Three Phase Bidirectional Delta Connected Controller.

Last answer: Three Phase Bidirectional Delta Connected Controller:

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398 views 1 answer

asked May 7, 2020 by anonymous

State the modification to be done in dc series motor to work satisfactorily as ac series motor. State applications of ac series motor.

Last answer: Modifications are necessary in a dc series motor so that it operates satisfactorily on ac supply. The modifications are as follows: 1) AC series motor is built with a few field turns as ... and grinders 5) High speed vacuum cleaners 6) Sewing machines 7) Food processors 8) Drilling machine

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79 views 1 answer

asked Apr 29, 2018 by anonymous

In a 2 kW, 200 V, 1000 rpm. DC series motor the torque at full load was found to be 0.3 N -m. The torque at

In a 2 kW, 200 V, 1000 rpm. DC series motor the torque at full load was found to be 0.3 N -m. The torque at half full load in N -m is :

Last answer: In a 2 kW, 200 V, 1000 rpm. DC series motor the torque at full load was found to be 0.3 N -m. The torque at half full load in N -m is : 0.075

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70 views 1 answer

asked Apr 29, 2018 by anonymous

Series capacitive compensation in EHV transmission line is used to

Last answer: To maintain voltage stability

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340 views 2 answers

anonymous · Answer 1 · 2018-03-16T19:11:27+0000

answered Mar 16, 2018 by anonymous

Cells are connected in series in order to increase voltage available.

Cells are connected in series in order to?

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