**Description** : 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

**Answer** : When an additional resistor is connected across an existing parallel circuit, the total resistance: decreases

**Description** : What is the total resistance of three 15-ohm resistors connected in parallel?

**Answer** : ANSWER: 5 OHMS

**Description** :

**Answer** : If two resistances of 10 Ω and 10 Ω are connected in parallel the equivalent resistance is 5 Ω.

**Description** : 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

**Answer** : 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

**Description** :

**Answer** : If two parallel-connected resistors dissipate 6 watts and 10 watts of power, then 16 watts is the total power loss.

**Description** : If electric resistance is to be decreased, then the number of resistances should be connected in _______ (1) Series (2) Parallel (3) Mixed arrangement (4) None of these

**Answer** : Parallel

**Description** : A 30ohm resistance is connected in parallel with a resistor whose ohmic value is unknown.if thetotal current taken us 10.5s ,when the circuit voltage is210v,calculate the resistance

**Description** :

**Answer** : It increases.

**Description** : why the electrical appliances are connected in parallel ?

**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 .

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

**Answer** : equivalent resistance

**Description** : When two 100 kΩ resistors are connected in parallel, net resistance is

**Answer** : When two 100 kΩ resistors are connected in parallel, net resistance is 50 kΩ

**Description** : 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 approximate values of Q-factor and bandwidth are, respectively
(A) 40, 400 Hz (B) 10, 100 Hz (C) 20, 50 Hz (D) 50, 20 Hz

**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

**Description** : 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

**Description** : 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

**Answer** : D) 2 ohms Solution: 1/Rt = (1/R)(n) 1/Rt = (1/10) (5) 1/Rt = 5/10 Rt = 2 ohms

**Description** : 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

**Description** : A resistor of value R/2 is connected in parallel with a resistor of value R/3. The voltage drop across the parallel combination is V. The total current supplied by the voltage source is: w) 2 V/R (read: 2 V over R) x) 3 V/R (read: 3 V over R) y) 4 V/R (read: 4 V over R) z) 5 V/R (read: 5 V over R)

**Answer** : ANSWER: Z -- 5 V/R

**Description** : Two identical resistors are connected in parallel and consume 200 watts together. A third identical resistor is added in parallel. The total power consumed is: w) 100 watts x) 200 watts y) 300 watts z) 400 watts

**Answer** : ANSWER: Y -- 300 WATTS

**Description** : How will the total capacitance change, when two capacitors are connected in parallel?

**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.

**Description** : N resistors of each of resistance R when connected in series offer an equivalent resistance of 50 ohm and when reconnected in parallel the effective resistance is 2 ohm the value of R is

**Description** : A five ohm and a ten ohm resistor are connected in parallel, what single resistance is "equivalent" to this combination?

**Answer** : ANSWER: 3 AND 1/3 OHM

**Description** : A wire of resistance R is cut into ‘n’ equal parts. These parts are then connected in parallel. The equivalent resistance of the combination will be

**Answer** : R/n2

**Description** : 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

**Answer** : Glow with the same brightness as before

**Description** : what will be the capacitance if three capacitors connected in parallel each having value of 0.5 micro Farad ?

**Answer** : the total capacitace when connected in parallel Tc=total capacitor c1=c2=c3=0.5uf Tc=c1+c2+c3 Tc=1.5uf

**Description** : For a balanced three phase star connected load for which line voltage is 230V and per phase resistance and reactance is 6 Ohm and 8 Ohm respectively.
Calculate: 1) phase voltage 2) line current 3) power factor 4) total power absorbed

**Description** : 1. If the current in the core decreases, what will the strength of the magnetic field be?
2. What is the commonly used unit for measuring the speed of data transmission?
3. The Govt. of India does not provide any direct financial assistance to which scheme?
4. Why is fog common around Newfoundland coast?
5. When Raja Wodeyar founded the kingdom of Mysore, who was the ruler of the Vijayanagar Empire?
6. Which tissue help in keeping the body warm?
7. Which State sends the maximum number of members to the Rajya Sabha?
8. Which gas has maximum colorific value?
9. Which is the capital of the Union Territory of Dadra and Nagar Haveli?
10. Who was the head of the Committee formed by the government to enquire into Jallianwala Bagh massacre?
11. Limba Ram is associated with which field?
12. Ms. Shilpa Singh Miss India Universe belongs to which city?
13. A molecule of glucose on complete oxidation yields howmany ATP molecules in case of aerobic respiration?
14. Kanchipuram is in which state?
15. Who was known as the ‘Liberator of the Press’ ?
16. By whom is the Chairman of Public Accounts Committee appointed?
17. A lighted candle gets extinguished when covered with a tumbler. Why?
18. With which India’s progress has been reasonably satisfactory in connection?
19. Which river flows between the Vindhya and Satpura ranges?
20. Which was a journal brought out by Abul Kalam Azad ?

**Answer** : Answer : 1. Decreases 2. Bits per second 3. Jeevan Sathi Yojana 4. Because warm and cold currents meet 5. Ranga II 6. Fatty tissue 7. Uttar Pradesh 8. Oil gas 9. Silvassa 10. Hunter 11. Sports ... 16. Speaker 17. Because of inadequate supply of air 18. Growth of GNP 19. Narmada 20. Al -Hilal

**Description** : Consider the following statements : If a high Q parallel resonant circuit is loaded with a resistance
1. The circuit impedance reduces.
2. The resonant frequency remains the same.
3. The bandwidth reduces.
Which of the above statements is/are correct ?

**Answer** : Consider the following statements : If a high Q parallel resonant circuit is loaded with a resistance 1. The circuit impedance reduces. 2. The resonant frequency remains the same. 3. The bandwidth reduces. Which of the above statements is/are correct ? 3 only

**Description** :

Resistance of a material always decreases if?

**Answer** : Resistance of a material always decreases if number of free electrons available become more.

**Description** : Two resistance 100Ω ± 5Ω ± 15Ω are connected in series. If the errors are specified as standard deviations, the resultant error will be

**Answer** : Two resistance 100Ω ± 5Ω ± 15Ω are connected in series. If the errors are specified as standard deviations, the resultant error will be ± 15.8Ω

**Description** : A 20 ohm resistor and a 60 ohm resistor are connected in parallel to a voltage source. If the current in the 60 ohm resistor is one ampere, the current in the 20 ohm resistor will be: w) 1/3 ampere x) 2/3 ampere y) 1 ampere z) 3 amperes

**Answer** : ANSWER: Z -- 3 AMPERES

**Description** : If a three farad capacitor and a six farad capacitor are connected in parallel, what is their equivalent capacitance?

**Answer** : ANSWER: 9 FARADS

**Description** : If two 3-phase transformers with unequal voltage ratios are connected in parallel, the result is (A) circulating current on no-load (B) no circulating current on no-load (C) dead short-circuit (D) equal no-load secondary emfs

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

**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

What will happen if the transformers working in parallel are not connected with regard to polarity ?

**Description** :

**Answer** : Winding will be damaged

**Description** : A sine wave voltage is applied across an inductor. When the frequency of the voltage is decreased, the current decreases.

**Answer** : The question seems to be wrong. Increase in frequency would actually decrease the current through the Inductor. This happens because inductive reactance Xl is directly proportional to frequency. And if frequency increases the value of Xl would ... vice versa. Xl= 2*pi*f*L I=E/Z Z=sqrt(R^2+Xl^2)

**Description** :

**Answer** : By using current rule

**Description** : For a parallel connection of light bulbs, which of the following statements is correct? w) The resistance of each light bulb must be the same. x) If one goes out they all go out. y) Each of the light bulbs operates independently.

**Answer** : ANSWER: Y -- EACH OF THE LIGHT BULBS OPERATES INDEPENDENTLY.

**Description** : Resistance of a copper wire decreases when ......................increases

**Answer** : Resistance of a copper wire decreases when diameter increases

**Description** : A transformer has a turns ratio of two to one. If a 100 ohm resistor is connected on the high side, its resistance as measured on the low side would be: w) 25 ohms x) 50 ohms y) 100 ohms z) 400 ohms

**Answer** : ANSWER: W -- 25 OHMS

**Description** : A 4-pole 460V shunt motor has its armature wave connected with 888 conductors. The
useful flux per pole is 0.02 wb and the resistance of the armature circuit is 0.7Ω. if the
armature current is 40A. Calculate
(i) the speed
(ii) the torque

**Description** : When an antenna of input resistance 73 ohm is connected to a 50-ohm line and if the losses are ignored then its efficiency will be nearly
(A) 0.19 (B) 0.81 (C) 0.97 (D) 1.19

**Answer** : When an antenna of input resistance 73 ohm is connected to a 50-ohm line and if the losses are ignored then its efficiency will be nearly 0.81

**Description** :

**Answer** : If the resistance total in a series circuit doubles, current will: be halved

**Description** :

**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 [email protected]

**Description** : Three capacitors 15µf, 18µf and 12µf are connected in a circuit. Find equivalent capacitance when they are connected in – 1) Series 2) Parallel

**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

**Description** : 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

**Description** : 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

**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

**Description** : 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

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

**Description** : 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

**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

**Description** : 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 sum of the individual inductances.
(C) the sum of the reciprocals of individual inductances.
(D) the reciprocal of the sum of reciprocals of individual inductances.

**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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