15.6 W
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 [email protected]
Description : The constant potential difference across a 2 ohm resistor is 20 volts. How many watts of power are dissipated by this resistor?
Last Answer : ANSWER: 200 WATTS
Description : If the rms voltage drop across a 15 kilt resistor is 16 V, the peak current through the resistor is : - a) 15 mA b) 1.5 mA c) 10 mA d) 1 mA
Last Answer : If the rms voltage drop across a 15 kilt resistor is 16 V, the peak current through the resistor is : - 1.5 mA
Description : Two bulbs 60 W and 100 W designed for voltage 220 V are connected in series across 220 V source. The net power dissipated is
Last Answer : Two bulbs 60 W and 100 W designed for voltage 220 V are connected in series across 220 V source. The net power ... B. 160 W C. `37.5 W` D. 60 W
Last Answer : Two bulbs 60 W and 100 W designed for voltage 220 V are connected in series across 220 V source. The net power ... `37.5` W B. 75W C. 80W D. 40 W
Description : The potential difference across a 4 ohm resistor is 20 volts. Assuming that all of the energy dissipated by this resistor is in the form of heat, how many joules of heat are radiated in 10 seconds?
Last Answer : ANSWER: 1000 JOULES
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)
Last Answer : ANSWER: Z -- 5 V/R
Description : Three resistors which have different values are connected in series. Which one of the following statements is correct? w) The potential drop across all three resistors is the same. x) The same current passes through all three resistors. y) The same power is dissipated by all three resistors.
Last Answer : ANSWER: X -- THE SAME CURRENT PASSES THROUGH ALL THREE RESISTORS.
Description : If power dissipated in the `9 Omega` resistor in the resistor shown is `36 W`, the potential difference across the `2 Omega` resistor is
Last Answer : If power dissipated in the `9 Omega` resistor in the resistor shown is `36 W`, the potential difference across the `2 ... 8 V B. 10 V C. 2 V D. 4 V
Description : If a current of 1.5 A is maintained in a resistor of 10 2, then the energy dissipated in the resistor in 1 minute will be : (1) 15 W (2) 22.5 W (3) 135 W (4) 1350 W
Last Answer : (4) 1350 W Explanation: The potential difference or voltage, V, across two points is defined as the energy, E dissipated or transferred by a coulomb of charge 9, that moves through two points.
Description : Current in a circuit if resistance of 15 Ω and potential difference of 3.0 V is applied across it's ends is A. 1 A B. 2 A C. 0.5 A D. 0.20 A
Last Answer : 0.20 A
Description : Three equal resistors connected in series with a source of e m f together dissipate 10 W of power each. What will be the power dissipated if the same resistors are connected in parallel across the same source of e m f? a. 40 W b. 90W c. 100W d. 120W
Last Answer : b. 90W
Description : Ammeters and voltmeters used in sinusoidal AC power systems indicate which of the following values of the waveforms measured? A. Peak value B. Root-mean-square value C. Average value D. Maximum value
Last Answer : Answer: B
Description : An SSB transmitter produces a peak-to-peak voltage of 200 V across a 100 Ω antenna load. What is the Peak Envelope Power? A) 49.98 W B) 79.98 W C) 99.96 W D) 199.93 W
Last Answer : An SSB transmitter produces a peak-to-peak voltage of 200 V across a 100 Ω antenna load. What is the Peak Envelope Power? A) 49.98 W B) 79.98 W C) 99.96 W D) 199.93 W
Description : 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
Description : If current of 20 mA is passing through op-amp and voltage drop across series resistor is 10 V then value of resistance is A. 500Ω B. 400Ω C. 300Ω D. 200Ω
Last Answer : 500Ω
Description : A current of 5 amps passes through a 10 ohm resistor. What power is dissipated by this resistor under these conditions?
Last Answer : ANSWER: 250 WATTS
Description : Two 10 Ω resistors are connected in parallel, their equivalent resistance isA. 5 Ω B. 0.2 Ω C. 15 Ω D. 20 Ω
Last Answer : 5 Ω
Description : The front-end of a television receiver, having a bandwidth of 7Mhz, and operating at a temperature of 27˚C , consists of an amplifier having a gain of 15 followed by a mixer whose gain is 20. The ... equivalent noise resistance for this television receiver. A. 8760 Ω B. 875Ω C. 8.76Ω D. 0.876Ω
Last Answer : B. 875Ω
Description : Sundry Debtors – Rs.15,000 Bills Receivable (B/R) – Rs.12,500 Cash at Bank – Rs.17,500 Stock – Rs.15,000 Profit – Rs.20,000 Creditors – Rs.25,000 Bills Payable (B/P) – Rs.15,000 Sales – Rs.1,00,000 What is the Acid Test Ratio ? (A) 1•5 : 1 (B) 1•125 : 1 (C) 16 2/3% (D) 50%
Last Answer : Answer: 1•125 : 1
Description : Combined resistance of 5 Ω and 10 Ω is equal to A. 10 Ω B. 16 Ω C. 15 Ω D. 20 Ω
Last Answer : 15 Ω
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
Last Answer : ANSWER: W -- 25 OHMS
Description : A conducting bar is slid at a constant velocity v along two conducting rods. The rods ar seprated by a distance l and connected across a resistor R. T
Last Answer : A conducting bar is slid at a constant velocity v along two conducting rods. The rods ar ... to determine the direction and nature of the current
Last Answer : A conducting bar is slid at a constant velocity v along two conducting rods. The rods ar seprated by a distance l ... apparatus? A. v B. l C. R D. B
Last Answer : A conducting bar is slid at a constant velocity v along two conducting rods. The rods ar seprated by a ... i generated by the apparantus? B. C. D.
Description : Two series resistors are connected to an ac source. If there are 7.5 V rms across one resistor and 4.2 V rms across the other, the peak source voltage is? A.16.54 V B.1.65 V C.10.60 V D.5.93 V
Last Answer : Two series resistors are connected to an ac source. If there are 7.5 V rms across one resistor and 4.2 V rms across the other, the peak source voltage is? A.16.54 V B.1.65 V C.10.60 V D.5.93 V
Description : A receiver connected to an antenna whose resistance is 50 Ω has an equivalent noise resistance of 30Ω. Calculate its equivalent noise temperature if the noise figure is equal to 1.6. A. 17.4 K B. 174K C. 1.74K D. 17K
Last Answer : B. 174K
Description : A 10 ohm and a 20 ohm resistor are connected in parallel to a current source. What fraction of the current flows through the 20 ohm resistor? w) 1/2 x) 1/3 y) 2/3 z) 3/4
Last Answer : ANSWER: X -- 1/3
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
Last Answer : ANSWER: Z -- 3 AMPERES
Description : To find current in a resistance connected in a network, Thevenin's theorem is used VTH = 20 V and RTH = 5 Ω. The current through the resistance: (1) is 4 A (2) is 4 A or less (3) is less than 4 A (4) May be 4 A or less or more than 4 A
Last Answer : To find current in a resistance connected in a network, Thevenin's theorem is used VTH = 20 V and RTH = 5 Ω. The current through the resistance: is less than 4 A
Description : The energy dissipated when a car hits a tree at 70 miles per hour is ABOUT how much greater than that dissipated at 50 miles per hour? w) 20 percent x) 40 percent y) 70 percent z) 100 percent
Last Answer : ANSWER: Z -- 100 PERCENT
Description : A 20 V battery of internal resistance `1 Omega` is connected to three coils of `12 Omega, 6 Omega` and `4 Omega` in parallel, a resistor of `5Omega` a
Last Answer : A 20 V battery of internal resistance `1 Omega` is connected to three coils of `12 ... and the terminal potential difference across each battery.
Description : 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50'. What number is missing? -Riddles
Last Answer : 22
Description : Find the range of the given data : 25, 18, 20, 22, 16, 6, 17, 15, 12, 30, 32, 10, 19, 8, 11, 20 -Maths 9th
Last Answer : Here, the minimum and maximum values of given data are 6 and 32 respectively. Range = 32 – 6 = 26
Description : The range of the data 25, 18, 20, 22, 16, 6, 17, 15, 12, 30, 32, 10, 19, 8, 11 and 20 is -Maths 9th
Last Answer : In conclusion, the range of data 25, 18, 20, 22, 16, 6, 17, 15, 12, 30, 32, 10, 19, 8, 11, and 20 is 26.
Last Answer : (d) In a given data, maximum value = 32 and minimum value = 6 We know, range of the data = maximum value – minimum value = 32 – 6 = 26 Hence, the range of the given data is 26.
Description : 2. Arrange the following fractions in ascending order:(i) \( \frac{3}{8}, \frac{5}{6}, \frac{6}{8}, \frac{2}{4}, \frac{1}{3} \)(ii) \( \frac{4}{6}, \frac{3}{8}, \frac{6}{12}, \frac{5}{16} \)3. Arrange the ... ( \frac{23}{3} \) and 6(iii) \( \frac{18}{20} \) and \( \frac{21}{25} \)(iv) \( 3 \frac{3
Last Answer : 2. Arrange the following fractions in ascending order: (i) \( \frac{3}{8}, \frac{5}{6}, \frac{6}{8}, \frac ... frac{3}{10} \) and \( 2 \frac{7}{15} \)
Description : The first stage of a two-stage amplifier has a voltage gain of 10, a 600 Ω input resistor, a 1600Ω equivalent noise resistance and 27kΩ output resistor. For the second stage, these values are 25, 81kΩ, 19kΩ, and 1MΩ, ... this two stage amplifier. A. 2,518 kΩ B. 2,518 Ω C. 251.8 Ω D. 12,518 Ω
Last Answer : B. 2,518 Ω
Description : insulator which is placed between 2 plates of capacitor isA. electric B. dielectric C. inductor D. resistor
Last Answer : dielectric
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
Last Answer : ANSWER: Y -- 300 WATTS
Description : In a series RC circuit, 12 V (rms) is measured across.the resistor and 15 V (rms) is measured across the capacitor. The value of rms source voltage is: A. 3 V B. 27 V C. 19.2 V D. 1.9 V
Last Answer : In a series RC circuit, 12 V (rms) is measured across.the resistor and 15 V (rms) is measured across the capacitor. The value of rms source voltage is: 19.2 V
Description : Three resistances 20 Ω, 30 Ω and 60 Ω are connected in parallel, their combined resistance is given by A. 110 Ω B. 50 Ω C. 20 Ω D. 10 Ω
Last Answer : 10 Ω
Description : Two resistors of `6 Omega " and " 9 Omega` are connected in series to a 120 V source. The power consumed by the `6 Omega` resistor is
Last Answer : Two resistors of `6 Omega " and " 9 Omega` are connected in series to a 120 V source. The power consumed by ... 384 W B. 616 W C. 1500 W D. 1800 W
Description : Acceleration of train when it is moving steadily from 4.0 m s-1 to 20 m s-1 in 100 s is A. 1 m s-2 B. 2 m s-2 C. 0.16 m s-2 D. 3 m s-2
Last Answer : 0.16 m s-2
Description : f the temperature falls below 18 degrees, the heating is switched on. When the temperature reaches 21 degrees, the heating is switched off. What is the minimum set of test input values to cover all valid equivalence ... 17, 18, 20 and 21 degrees C. 18, 20 and 22 degrees D. 16 and 26 degrees
Last Answer : A. 15, 19 and 25 degrees
Description : A thermometer measures temperature in whole degrees only. If the temperature falls below 18 degrees, the heating is switched off. It is switched on again when the temperature reaches 21 degrees. What are the best values in degrees to ... and 25. B. 17,18 and19. C. 18, 20 and22. D. 16, 26 and 32.
Last Answer : A. 15,19 and 25.
Description : The average age of A and B is 20 years. If C were to replace A, the average would be 19 and id C were to replace B,the average would be 21 . The ages of A, B and C are (in years) (a) 22, 17,16 (b) 22, 18, 20 (c) 30, 18, 15 (d) 23, 17 ,15
Last Answer : 22, 18, 20 Hint : A + B = 2 x 20 C + B = 2 x 19 A + C = 2 x 21
Description : A series wound DC motor has its armature and field connected in series with a resistor. When the motor is disconnected from its power supply, this motor will exemplify __________. A. the ... the proper connections for an automatic strip heater C. a reversing controller circuit D. dynamic braking
Last Answer : Answer: D
Description : An LED is operated on a 12 volt automobile circuit. The voltage drop across the LED is 2 volts and the current must be limited to 50 milliamps to prevent its overheating and destruction. What size resistor must be used? w) 60 ohms x) 100 ohms y) 120 ohms z) 200 ohms
Last Answer : ANSWER: Z -- 200 OHMS