Three capacitors 15µf, 18µf and 12µf are connected in a circuit. Find equivalent capacitance when they are connected in – 1) Series 2) Parallel
Last Answer : Ans: Value of equivalent capacitance: Given: C1= 15μF, C2=18 µF, C3= 12µF i)For Series combination of capacitors: 1/Cs = (1/C1)+( 1/C2) +(1/C3) = (1/15)+( 1/18)+( 1/12) 1/Cs = 0.0666+0.0555+0. ... Cs = 4.868 µF ii) For parallel combination of capacitors: Cp = C1 + C2 + C3 = 15 +18+ 12 = 45 µF
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Sep 2, 2018
by
anonymous

what will be the capacitance if three capacitors connected in parallel each having value of 0.5 micro Farad ?
Last Answer : the total capacitace when connected in parallel Tc=total capacitor c1=c2=c3=0.5uf Tc=c1+c2+c3 Tc=1.5uf
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190 views
3 answers
asked
Dec 11, 2017
by
anonymous

If the capacitors are connected in parallel, then the potential difference across each capacitor is A. same B. different C. zero D. infinite
Last Answer : same
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8 views
1 answer

In a full-wave voltage doubler, are the capacitors connected in series or in parallel with the output load?
Last Answer : In parallel.
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8 views
1 answer
asked
Aug 20, 2021
by
anonymous

How will the total capacitance change, when two capacitors are connected in parallel?
Last Answer : The capacitance will increase if connected in parallel because it will be like you have increase surface area of a plate by connecting it to another.
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118 views
2 answers
asked
May 29, 2018
by
anonymous

Equivalent capacitance ‘C’ of a system of capacitors C1,C2,C3 connected in parallel is
Last Answer : Equivalent capacitance ‘C’ of a system of capacitors C1,C2,C3 connected in parallel is C = C1+C2+C3
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126 views
1 answer
asked
May 15, 2018
by
anonymous

Last Answer : Two capacitors connected in parallel results in More capacitance.
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85 views
1 answer
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Mar 28, 2018
by
anonymous

Do capacitors in parallel have the same voltage?
Last Answer : Not same but we will get addition of both values when capacitors are connected in parallel...
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312 views
8 answers
asked
Dec 11, 2017
by
anonymous

Identical dielectric slabs are inserted into two identical capacitors `A` and `B`. These capacitors and a battery are connected as shown in figure. No
Last Answer : Identical dielectric slabs are inserted into two identical capacitors `A` and `B`. These capacitors ... , which fully appears as heat in the circuit
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1 answer

How are synchro capacitors connected in a circuit?
Last Answer : They are delta-connected across the stator windings.
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3 views
1 answer
asked
Aug 20, 2021
by
anonymous

The effective capacitance of four, 5-microfarad capacitors connected in series is: w) 0.20 microfarad x) 0.5 microfarad y) 1.0 microfarad z) 1.25 microfarad
Last Answer : ANSWER: Z -- 1.25 MICROFARAD
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14 views
1 answer
asked
Mar 12, 2021
by
anonymous

Three capacitors with different capacitances are connected in series. Which of the following statements is TRUE? w) All three of the capacitors have the same potential difference between their plates. x ... y) The capacitance of the system depends on the voltage applied across the three capacitors.
Last Answer : ANSWER: X -- THE MAGNITUDE OF THE CHARGE IS THE SAME ON ALL OF THE CAPACITOR PLATES
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70 views
1 answer
asked
Mar 12, 2021
by
anonymous

A battery of 40 V and three capacitors of 1000 μF, 500 μF and 100 μF are all connected in (I) parallel and (II) series. The ratio of total charge stored in case I to that in case II is approximately (a) 3 : 64 (b) 64 : 3 (c) 160 : 3 (d) 104 : 5
Last Answer : A battery of 40 V and three capacitors of 1000 μF, 500 μF and 100 μF are all connected in (I) parallel and (II) series. The ratio of total charge stored in case I to that in case II is approximately 104 : 5
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121 views
1 answer
asked
May 15, 2018
by
anonymous

What is Law of capacitors in parallel?
Last Answer : Need answer
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1 answer

Heat flux through several resistances in series in analogous to the current flowing through several (A) Resistances in parallel (B) Capacitors in series (C) Resistances in series (D) None of these
Last Answer : (C) Resistances in series
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1 answer

By mistake, a voltmeter is connected in series and an ammeter is connected in parallel, with a resistance in an electrical circuit. What will happen t
Last Answer : By mistake, a voltmeter is connected in series and an ammeter is connected in parallel, with a ... be damaged D. Only the voltmeter will be damaged
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1 view
1 answer

Last Answer : Winding will be damaged
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138 views
2 answers
asked
Mar 19, 2018
by
anonymous

Why capacitors are used to improve power factor?
Last Answer : Capacitors generate reactive power instead of that drawn from source which is required by inductive loads.so it reduce the reactive current which is drawn from source to be drawn from capacitor.This control in Electric bills cost.
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185 views
3 answers
asked
Aug 18, 2019
by
anonymous

State any four types of capacitors.
Last Answer : Types of capacitors: i) Air capacitor ii) Paper capacitor iii) Mica capacitor iv) Ceramic capacitor v) Electrolytic capacitor vi) Poly-carbon capacitor
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103 views
1 answer
asked
Sep 4, 2018
by
anonymous

What is the charge on each capacitor when a 150 V is applied across two capacitors with values 5 μF and 10 μF, connected in series? A) 500 μC B) 0.5 μC C) 0.5 C D) None of these
Last Answer : What is the charge on each capacitor when a 150 V is applied across two capacitors with values 5 μF and 10 μF, connected in series? A) 500 μC B) 0.5 μC C) 0.5 C D) None of these
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101 views
1 answer
asked
Apr 29, 2018
by
anonymous

For making capacitors, it is better to select a dielectric having_________.
Last Answer : For making capacitors, it is better to select a dielectric having high permittivity.
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88 views
1 answer
asked
Mar 31, 2018
by
anonymous

Capacitors for power factor correction are rated in?
Last Answer : Capacitors for power factor correction are rated in kVAR.
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84 views
1 answer
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Mar 25, 2018
by
anonymous

Last Answer : Uses of ceramic capacitors is as follows :The ceramic capacitor is use in DC to DC converter.The ceramic capacitor is use with band pass and band stop filter.Ceramic capacitor ... The ceramic capacitor is uses in high frequency circuits.Ceramic capacitors are use for biasing applications.
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112 views
1 answer
asked
Sep 18, 2017
by
anonymous
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what is equivalent resistance when four 4 Ohm resistors are connected in i) series ii) parallel
Last Answer : equivalent resistance
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372 views
2 answers
asked
Jan 24, 2020
by
anonymous

Last Answer : Req= (1/1200 +1/560 + 1/2.1)^-1 = 2.1 ohms RT= 2.1 + 7.8 = 9.9 ohms IT = V/R = 24/9.9 = 2.4 A Veq= R I = 2.1 2 ... 7.8 = 12.096 w = 44.928 w _________________________________________ By: Ellis-Junior Kamatjipose ellisjuniork90@gmail.com
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218 views
1 answer
asked
Aug 5, 2019
by
A supply of 24 V DC is applied across a

Two heater wires of equal length are connected first in series and then in parallel. The ratio of heat generated from series to parallel connection will be (a) 4 : 1 (b) 2 : 1 (c) 1 : 2 (d) 1 : 4
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197 views
0 answers
asked
May 25, 2018
by
anonymous

When two 100 kΩ resistors are connected in parallel, net resistance is
Last Answer : When two 100 kΩ resistors are connected in parallel, net resistance is 50 kΩ
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103 views
1 answer
asked
May 15, 2018
by
anonymous

When four resistances of 2W 1W; 5W 2W; 10W 5W and 15W 10 W are connected in parallel, the greatest power is absorbed by • 2 W, 1 W • 5 W, 2 W • 10 W, 5W • 15 W, 10 W
Last Answer : When four resistances of 2W 1W; 5W 2W; 10W 5W and 15W 10 W are connected in parallel, the greatest power is absorbed by 2 W, 1 W
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145 views
1 answer
asked
May 13, 2018
by
anonymous

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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213 views
1 answer
asked
Apr 29, 2018
by
anonymous

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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121 views
1 answer
asked
Apr 29, 2018
by
anonymous

Consider a circuit with four 10 Ω resistors connected in parallel and the current flowing through the circuit is 5 A. What will be the current if the above 4 resistors are connected in parallel? A) 5 A B) 50 A C) 500 A D) None of these
Last Answer : Consider a circuit with four 10 Ω resistors connected in parallel and the current flowing through the circuit is 5 A. What will be the current if the above 4 resistors are connected in parallel? A) 5 A B) 50 A C) 500 A D) None of these
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182 views
1 answer
asked
Apr 29, 2018
by
anonymous

A coil of inductance 240 mH and resistance 75 Ohm is connected in parallel with a capacitor across a 30 V, variable frequency supply. The current drawn by the circuit is found to be minimum when the supply frequency is 1 kHz. The ... (A) 40, 400 Hz (B) 10, 100 Hz (C) 20, 50 Hz (D) 50, 20 Hz
Last Answer : A coil of inductance 240 mH and resistance 75 Ohm is connected in parallel with a capacitor across a 30 V, variable frequency supply. The current drawn by the circuit is found to be minimum ... supply frequency is 1 kHz. The approximate values of Q-factor and bandwidth are, respectively 20, 50 Hz
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212 views
1 answer
asked
Apr 25, 2018
by
anonymous

A network consists of several inductances connected in parallel. The equivalent inductance of the network is given by (A) the sum of the individual inductances. (B) the reciprocal of the ... of individual inductances. (D) the reciprocal of the sum of reciprocals of individual inductances.
Last Answer : A network consists of several inductances connected in parallel. The equivalent inductance of the network is given by the reciprocal of the sum of reciprocals of individual inductances.
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134 views
1 answer
asked
Apr 25, 2018
by
anonymous

Two transformers having the same p.u. impedance connected in parallel share the connected load (A) equally (B) in proportion to the respective ratings (C) in proportion to the voltage ratio (D) in proportion to the zero phase displacement
Last Answer : Two transformers having the same p.u. impedance connected in parallel share the connected load in proportion to the respective ratings
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135 views
1 answer
asked
Apr 25, 2018
by
anonymous

When an additional resistor is connected across an existing parallel circuit, the total resistance: A. remains the same B. decreases by the value of the added resistor C. increases by the value of the added resistor D. decreases
Last Answer : When an additional resistor is connected across an existing parallel circuit, the total resistance: decreases
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476 views
1 answer
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Apr 12, 2018
by
anonymous

Three lamps are connected in parallel across a 120 Volt source. If one lamp burns out, the remaining two will be: A. Glow dimmer B. Glow brighter C. Not light D. Glow with the same brightness as before
Last Answer : Glow with the same brightness as before
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3.8k views
2 answers
asked
Apr 12, 2018
by
anonymous

The number of parallel paths in armature winding of four pole wave winding connected dc machine having 22 coil sides is (1) 4 (2) 22 (3) 2 (4) 11
Last Answer : Ans- Option (3) because wave winding always have 2 parallel paths
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213 views
1 answer
asked
Apr 11, 2018
by
anonymous

The number of parallel paths in the armature winding of a 4 -pole, wave connected d.c. machine having 28 coilside is : - a) 28 b) 14 c) 4 d) 2
Last Answer : 2
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773 views
2 answers
asked
Apr 11, 2018
by
anonymous

A parallel combination of capacitance C and resistance R is connected in series with inductance L and small resistance r. Under what condition will the circuit be non-reactive? (A) C=LR (B) C=LR2 (C) C=L/R2 (D) C=L/R
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166 views
0 answers
asked
Apr 5, 2018
by
anonymous
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What is the equivalent resistance of a network having 5 resistors of each 10ohm connected in parallel? (A) 10 Ohms (B) 50 Ohms (C) 500 Ohms (D) 2 Ohms
Last Answer : D) 2 ohms Solution: 1/Rt = (1/R)(n) 1/Rt = (1/10) (5) 1/Rt = 5/10 Rt = 2 ohms
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178 views
1 answer
asked
Apr 5, 2018
by
anonymous

Three resistors of 4 Ω, 6 Ω and 9 Ω are connected in parallel. Which resistor consumes the maximum power? (A) 4 Ω (B) 6 Ω (C) 9 Ω (D) 17 Ω
Last Answer : (c) 9 ohm
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9.3k views
3 answers
asked
Apr 5, 2018
by
anonymous
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When ‘n’ resistances each of value ‘r’ are connected in parallel, then the resultant resistance is ‘x’. When these ‘n’ resistances are connected in series, total resistance is (A) n2X (B) X/n (C) n2/X (D) nX2
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121 views
0 answers
asked
Apr 5, 2018
by
anonymous

Last Answer : If two resistances of 10 Ω and 10 Ω are connected in parallel the equivalent resistance is 5 Ω.
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202 views
1 answer
asked
Mar 31, 2018
by
anonymous

Last Answer : Three elements having conductance G1 , G2 and G3 are connected in parallel. Their combined conductance will be G1 + G2 +G3
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670 views
1 answer
asked
Mar 31, 2018
by
anonymous

Four identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be
Last Answer : Four identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be 1 / 16 times.
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309 views
1 answer
asked
Mar 31, 2018
by
anonymous

When n resistances each of value r are connected in parallel, then resultant resistance is x. When these n resistances are connected in series, total resistance is
Last Answer : When n resistances each of value r are connected in parallel, then resultant resistance is x. When these n resistances are connected in series, total resistance is n2 x.
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246 views
1 answer
asked
Mar 31, 2018
by
anonymous

Last Answer : Loud Speakers are always connected in parallel on Both of them.
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86 views
1 answer
asked
Mar 29, 2018
by
anonymous

why the electrical appliances are connected in parallel ?
Last Answer : If the appliances connected in series if one of the appliances fails to work other appliances also doesn't work because the current doesn't flow in the appliances.so ,we connect appliances in parallel that if any one of the appliances fails to work it doesn't effect other appliances .
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318 views
2 answers
asked
Aug 14, 2017
by
anonymous

if the resistance is connected in parallel the total resistance decreases why?
Last Answer : Because if the resistances are connected in parallel it provide a conducting path for current to flow. So more the current paths less the resistance
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120 views
1 answer
asked
Aug 14, 2017
by
anonymous

Which of the following will happen if a voltmeter is connected like an ammeter in series to the load ? (A) There will be almost no current in the circuit. (B) The meter will burn. (C) The measurement will be trio high. (D) A very high current will flow.
Last Answer : Which of the following will happen if a voltmeter is connected like an ammeter in series to the load ? (A) There will be almost no current in the circuit. (B) The meter will burn. (C) The measurement will be trio high. (D) A very high current will flow.
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93 views
1 answer
asked
May 12, 2018
by
anonymous
