In an AC circuit, the voltage across R, L and C are 30 V, 60 V and 20 V respectively. The applied voltage is 50 V
Description : In an ac series RLC circuit, the voltage across R and L is 20 V; voltage across L and C is 9 V and voltage across RLC is 15 V. What is the voltage across C?
Last Answer : In an ac series RLC circuit, the voltage across R and L is 20 V; voltage across L and C is 9 V and voltage across RLC is 15 V. What is the voltage across C? 7 V
Description : What is the RMS voltage in a series RL circuit, if the voltage across R and L is 256 V and 192 V respectively? A) 320 V B) 448 V C) 64 V D) None of these
Last Answer : What is the RMS voltage in a series RL circuit, if the voltage across R and L is 256 V and 192 V respectively? A) 320 V B) 448 V C) 64 V D) None of these
Description : When an AC voltage, of variable frequency is applied to series L-C-R circuit, the current in the cirucit is the same at 4kHz. The current in the cirui
Last Answer : When an AC voltage, of variable frequency is applied to series L-C-R circuit, the current in the cirucit ... is maximum at (x)kHz. Find the value of x
Description : Instantaneous voltage and instantaneoss current in an L-R circuit in AC is V=100sin (100)t and `i=10sin(100t-pi//4)`. Match the following table, `{:(,
Last Answer : Instantaneous voltage and instantaneoss current in an L-R circuit in AC is V=100sin (100)t and `i=10sin(100t ... power in one cycle",(S),"None"):}`
Description : An AC supply of 230 V is applied to half wave rectifier circuit. A transformer turns ratio is 20 : 1. Find i) Output DC voltage (ii) Peak Inverse Voltage (PIV)
Last Answer : Solution:
Description : Ionisation potential applied across the electrodes of electrostatic tar precipitator is around (A) 230 V AC (B) 60 KV AC (C) 230 V DC (D) 60 KV DC
Last Answer : (D) 60 KV DC
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 : A series R-L circuit is suddenly connected to d.c. voltage source of V volts. The current in this series circuit, just after the switch is closed, is equal to (1) Zero (2) V/L (3) V/C (4) V.L/C
Last Answer : When is a series RLC circuit is over damped
Description : A voltage of 30 V is applied across a colour coded carbon resistor with first, second and third rings of blue, black and yellow colurs. What is the cu
Last Answer : A voltage of 30 V is applied across a colour coded carbon resistor with first, second and ... What is the current flowing through the resistor ?
Description : In an L-C -R search circuit connected to an AC source `V=V_(0)sin(100pi+(pi)/(6))``V_(R)=40V, V_(L)=40 and V_(C )=10V`, resistance `R=4Omega` Choose t
Last Answer : In an L-C -R search circuit connected to an AC source `V=V_(0)sin(100pi+(pi)/(6))``V_(R)=40V, V_ ... (a) and (b) are correct D. Both a and b are wrong
Description : In an L-C -R series circuit connected to an AC source `V=V_(0)sin(100pi(t)+(pi)/(6))``V_(R)=40V, V_(L)=40 and V_(C )=10V`, resistance `R=4Omega` Choos
Last Answer : In an L-C -R series circuit connected to an AC source `V=V_(0)sin(100pi(t)+(pi)/(6))``V_(R)=40V, V_(L) ... (2) A` C. `20sqrt(2) A` D. `25sqrt(2) A`
Description : A metal rod of length l cuts across a uniform magnetic field B with a velocity v. If the resistance of the circuit of which the rod forms a part is r,
Last Answer : A metal rod of length l cuts across a uniform magnetic field B with a velocity v. If the resistance of the circuit of ... lv)/(r)` D. `(Blv^(2))/(r)`
Description : A step voltage E is applied to a series R-L circuit. The rate of change of current is maximum at t = _: (1) Zero (2) Infinity (3) L/R (4) R/L
Last Answer : A step voltage E is applied to a series R-L circuit. The rate of change of current is maximum at t = Zero.
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 : In the circuit shown the voltage drop across the `15Omega` resistor is `30 V` having the polarity as indicated. The ratio of potential difference acro
Last Answer : In the circuit shown the voltage drop across the `15Omega` resistor is `30 V` having the ... difference across `5Omega` and resistance `R` is
Description : An ac voltage is applied across a diode. The tube will conduct when
Last Answer : Positive.
Description : V=100Sin (1000t+46 deg), I=2Sin (1000t+80 deg) what are the elements in the circuit a) R=30 ohm, L=30 mH b) R=30 ohm, C=33.3 micro farads c) R=40 ohm, L=30 mH d) R=40 ohm, L=33.3 micro farads
Last Answer : Ans: R=40 ohm, L=33.3 micro farads
Description : In a series resonant circuit, maximum voltage across L occurs at (a) Resonant frequency (b) Slightly below resonant frequency (c) Slightly above resonant frequency (d) At a frequency where I is maximum
Last Answer : In a series resonant circuit, maximum voltage across L occurs at Slightly above resonant frequency
Description : Turn ratio of a transformer is 5. If 220 V AC is applied to its primary coil, voltage in the secondary coil will be: a. 44V b. 4.4 V c. 220V d. 1100V
Last Answer : c. 220V
Description : A permanent magnet moving coil instrument gives full scale deflection of 25mA when a voltage of 75mV is applied across it. Calculate: (i) Resistance of shunt required for full scale deflection of 150 A. (ii) Series resistance for full scale deflection of 500 V.
Last Answer : Answer :
Description : The voltage across a coil, when di/dt = 20 mA/s and L = 8 H, is: A. 16 mV B. 160 mV C. 1.6 mV D. 2.5 mV
Last Answer : The voltage across a coil, when di/dt = 20 mA/s and L = 8 H, is: 160 mV
Description : A potential difference of V = 100 ± 2 volt, when applied across a resistance R gives a current of 10 ± 0.5 ampere.
Last Answer : A potential difference of V = 100 2 volt, when applied across a resistance R gives a current of 10 ... percentage error in R given by R = V/I.
Description : An AC supply of 230 V is applied to a half-wave rectifier circuit through a transformer having primary to secondary turn’s ratio 12:1. The peak inverse voltage is A) 8.62 V B) 12 V C) 19.17 V D) 27.11 V
Last Answer : An AC supply of 230 V is applied to a half-wave rectifier circuit through a transformer having primary to secondary turn’s ratio 12:1. The peak inverse voltage is A) 8.62 V B) 12 V C) 19.17 V D) 27.11 V
Description : Find the potential of the function V = 60cos θ/r at the point P(3, 60, 25). a) 20 b) 10 c) 30 d) 60
Last Answer : b) 10
Description : What would be the voltage drop across the series resistor of the circuit shown in the illustration if the source is 30 volts, the resistance of R1 is 10 ohms, R2 is 10 ohms and R3 is 10 ohms? EL-0032 A. 5 volts B. 10 volts C. 20 volts D. 30 volts
Last Answer : Answer: C
Description : What would be the voltage drop across the parallel branches of the circuit shown in the illustration if the source is 30 volts the resistance for R1 is 10 ohms, R2 is 10 ohms and R3 is 10 ohms? EL-0032 A. 5 volts B. 10 volts C. 20 volts D. 30 volts
Last Answer : Answer: B
Description : A series circuit consisting of three resistors has a current of 3 amps. If R1 = 20 ohms, R2= 60 ohms, and R 3 = 80 ohms, what is the (a) total resistance and (b) source voltage of the circuit?
Last Answer : (a) 160 ohms. (b) 480 ohms
Description : Three factors responsible for the change in voltage as load is applied to an AC generator are: 1) the drop in resistance in the armature circuit, 2) the change in flux, and 3) the ____________. A. armature winding speed B. inductance load drop C. coil pitch factor D. armature reactance voltage drop
Last Answer : Answer: D
Description : In the illustration, 12 volts is applied to the circuit where the resistance of R1 is 10 ohms and R2 is 10 ohms. what is the voltage across R2? EL-0036 A. 1.2 volts B. 2 volts C. 6 volts D. 12 volts
Description : In the illustration, the diode between terminals 16 and 17 is to _________. EL-0046 A. act as a short circuit for the sensing coil when CEMF is applied B. insure that the voltage across the coil does not exceed 9 volts C. improve response time D. act as a filter to prevent hunting
Last Answer : Answer: A
Description : If the line voltage to the controller shown in the illustration is 440 volts, what is applied across the control circuit? EL-0080 A. 110 volts B. 220 volts C. 440 volts D. 660 volts
Description : A DC voltage source is connected across a series RLC circuit. Under steady-state conditions, the applied DC voltage drops entirely across the
Last Answer : A DC voltage source is connected across a series RLC circuit. Under steady-state conditions, the applied DC voltage drops entirely across the C only
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 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 : An `L-C-R` series circuit with `100Omega` resistance is connected to an `AC` source of `200V` and angular frequency `300rad//s`. When only the capacit
Last Answer : An `L-C-R` series circuit with `100Omega` resistance is connected to an `AC` source of `200V` and ... and the power dissipated in the `L-C-R` circuit
Description : At a particular instant, the R-phase voltage of a balanced 3-phase system is + 30 V, and the Y-phase voltage is – 90 V. The voltage of B-phase at that instant is (A) + 120 V (B) – 120 V (C) – 60 V (D) + 60 V
Last Answer : At a particular instant, the R-phase voltage of a balanced 3-phase system is + 30 V, and the Y-phase voltage is – 90 V. The voltage of B-phase at that instant is + 60 V
Description : If the electricity represented by the wave form in 'B' were applied to the left side of the illustrated circuit, the output on the right side would be ____________. EL-0064 A. direct current with the ... lower lead D. clipped to a value equal to the square root of 3 times the input voltage value
Description : If reading the AC voltage from the line lead of a 440 VAC controller the range switch illustrated should be set to ___________. EL-0047 A. 1,000 V B. 250 V C. R X 10,000 D. Unable to safely read with this meter.
Description : If reading the AC voltage from a typical wall outlet, the range switch of the device illustrated should be set to ___________. EL-0047 A. 1,000 V B. 250 V C. R X 10,000 D. 10 ma/amps
Description : 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
Description : What is the stored energy when 200 V is applied across a 7 μF capacitor? A) 1400 Joules B) 0.7 Joules C) 0.14 Joules D) None of these
Last Answer : What is the stored energy when 200 V is applied across a 7 μF capacitor? A) 1400 Joules B) 0.7 Joules C) 0.14 Joules D) None of these
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 : 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 : If resistance is 20 Q. and inductance is 27 in a R-L series circuit, then time constant of this circuit will be?
Last Answer : 0.1s
Description : In a series `LCR` circuit the frequency of a `10 V`, `AC` voltage soure is adjusted in such a fashion that the reactance of the inductor meausers `15
Last Answer : In a series `LCR` circuit the frequency of a `10 V`, `AC` voltage soure is adjusted in such a ... the series combination of `L` and `C`will be:
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
Description : When 7/0.029 V.I.R cable is carrying 20 A, a drop of 1 V occurs every 12 m. The voltage drop in a 100 m run of this cable when it is carrying 10 A is nearly (a) 4.2 V (b) 3.2 V (c) 1.2 V (d) 0.42 V
Last Answer : When 7/0.029 V.I.R cable is carrying 20 A, a drop of 1 V occurs every 12 m. The voltage drop in a 100 m run of this cable when it is carrying 10 A is nearly 1.2 V