Description : The series and parallel resonance on L-C circuit differs in that?
Answer :
The series and parallel resonance on L-C circuit differs in that series resistance needs a low-resistance source for sharp rise in current.
asked
Mar 25, 2018
by
anonymous
Description : In a 3-phase converter circuit during commutation when one SCR in one phase is turned on to turn-off an SCR in another phase, results in (A) voltage notching (B) harmonic distortion (C) voltage sag (D) voltage swell
Answer :
In a 3-phase converter circuit during commutation when one SCR in one phase is turned on to turn-off an SCR in another phase, results in voltage notching
asked
Apr 28, 2018
by
anonymous
Description : The loop equation for a series RLC circuit gives
Answer :
The loop equation for a series RLC circuit gives
asked
Apr 2, 2020
by
anonymous
Answer :
Source transformation Replace the circuit with voltage source in series with a single resistor
asked
Mar 21, 2020
by
anonymous
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]
asked
Aug 5, 2019
by
A supply of 24 V DC is applied across a
Description : Series circuit rules
Answer :
Series circuit rules
asked
Jun 11, 2019
by
anonymous
Description : Define magnetic circuit. Draw simple series magnetic circuit.
asked
Aug 8, 2018
by
anonymous
Description : In a series R-C circuit, with the increase in frequency, current (A) Reduces (B) Increases (C) Does not change (D) Becomes zero
Answer :
In a series R-C circuit, with the increase in frequency, current Increases
asked
May 8, 2018
by
anonymous
Description : 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
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
asked
May 8, 2018
by
anonymous
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?
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
asked
May 1, 2018
by
anonymous
Description : A DC voltage source is connected across a series RLC circuit. Under steady-state conditions, the applied DC voltage drops entirely across the
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
asked
Apr 29, 2018
by
anonymous
Description : In a series RLC high Q circuit, the current peaks at a frequency (1) equal to the resonant frequency (2) greater than the resonant frequency (3) less than the resonant frequency (4) equal to half the resonant frequency
Answer :
In a series RLC high Q circuit, the current peaks at a frequency equal to the resonant frequency
asked
Apr 29, 2018
by
anonymous
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
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
asked
Apr 29, 2018
by
anonymous
Description : Which of the following is true with a series circuit having resistors of different values? A) The total resistance of the circuit is the sum of the individual resistances B) The current across each resistor is the same C) The voltage drop across each resistor depends on the value of the resistor D) All the above
Answer :
Which of the following is true with a series circuit having resistors of different values? A) The total resistance of the circuit is the sum of the individual resistances B) The current across ... voltage drop across each resistor depends on the value of the resistor D) All the above
asked
Apr 29, 2018
by
anonymous
Description : In a series circuit with unequal resistances?
Answer :
In a series circuit with unequal resistances the highest resistance has the highest voltage drop.
asked
Mar 25, 2018
by
anonymous
Description : At very low frequencies a series R-C circuit behaves as almost purely?
Answer :
At very low frequencies a series R-C circuit behaves as almost purely capacitive.
asked
Mar 25, 2018
by
anonymous
Description : If resistance is 20 Q. and inductance is 27 in a R-L series circuit, then time constant of this circuit will be?
Answer :
0.1s
asked
Mar 25, 2018
by
anonymous
Description : The time constant of a series R-C circuit is given by?
Answer :
The time constant of a series R-C circuit is given by RC.
asked
Mar 25, 2018
by
anonymous
Description : In a series L-C circuit at the resonant frequency the?
Answer :
In a series L-C circuit at the resonant frequency the current is maximum.
asked
Mar 25, 2018
by
anonymous
Description : In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of?
Answer :
In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of L or C.
asked
Mar 25, 2018
by
anonymous
Description : In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value?
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.
asked
Mar 25, 2018
by
anonymous
Description : In a series resonant circuit, the impedance of the circuit is?
Answer :
In a series resonant circuit, the impedance of the circuit is minimum.
asked
Mar 24, 2018
by
anonymous
Description : Define Multivibrator. State the types of multivibrator. Which M/V can be used as a flip-flop? Draw the circuit diagram.
Answer :
Definition:- A multivibrator is an electronic circuit that switches rapidly by means of positive feedback between two or more states. OR A multivibrator is an electronic circuit used to implement a ... Bistable Multivibrator: it can operate as a flip-flop, Circuit diagram
asked
May 2, 2020
by
anonymous
Description : Define Sample and hold period with reference to S/H circuit.
Answer :
Sample Period:- The time period during which the voltage across the capacitor is equal to the input voltage is called sample period. Hold Period:- The time period during which the voltage across the capacitor is constant is called hold period.
asked
May 2, 2020
by
anonymous
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
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
asked
Jun 18, 2018
by
anonymous
Description : A snubber circuit is connected to the power semiconductor device to reduce the (A) turn-on time (B) turn-off time (C) electrical stresses (D) thermal resistance
Answer :
A snubber circuit is connected to the power semiconductor device to reduce the electrical stresses
asked
Apr 28, 2018
by
anonymous
Description : What is the role of a capacitor in a circuit?
asked
Mar 15, 2018
by
anonymous
Answer :
Integrated circuit design for particular application is known as Application Specific Integrated Circuit ASIC. ASIC have smaller size, less power consumption and less cost .
asked
Sep 25, 2017
by
anonymous
Description : Explain the procedure to perform Short Circuit test on single phase transformer with circuit diagram.
asked
Apr 27, 2020
by
anonymous
Description : The armature current on symmetrical 3 phase short circuit of a synchronous machine (salient pole) (A) has q -axis current only (B) has d -axis current only (C) has both d and q axis currents (D) cannot be divided between q and d axis currents
Answer :
The armature current on symmetrical 3 phase short circuit of a synchronous machine (salient pole) has d -axis current only
asked
Apr 29, 2018
by
anonymous
Answer :
Short circuit test on transformers is conducted to determine copper losses.
asked
Mar 19, 2018
by
anonymous
Description : Draw the circuit diagram of battery charger using SCR and explain it’s working.
Answer :
Battery charger circuit using SCR: The figure shows the battery charger circuit using SCR. A 12V discharged battery is connected in the circuit and switch SW is closed. The singlephase 230V ... not fired. In this way, after full charging, further charging is automatically stopped.
asked
May 21, 2020
by
anonymous
Description : Explain working of static AC circuit breaker.
Answer :
Static AC Circuit breaker: The circuit configuration of static AC circuit breaker using SCR is shown in the figure. When switch S' is closed, the SCRs T1 and T2 are fired in positive ... non-availability of gate current. Thus the maximum time delay for breaking the circuit is one half-cycle.
asked
May 21, 2020
by
anonymous
Description : With neat diagram explain synchronized UJT triggering circuit.
Answer :
Line Synchronized UJT triggering circuit: The UJT is almost ideal as a firing device for SCRs. There are 2 main reasons for the compatibility between UJTs and SCRs. Firstly, the UJT produces a ... , the SCR is sure to have the right polarity between the anode and cathode for turning on.
asked
May 21, 2020
by
anonymous
Description : Draw circuit diagram of symmetrical configuration of bridge converter.
Answer :
circuit diagram of symmetrical configuration of bridge converter
asked
May 21, 2020
by
anonymous
Description : Draw circuit diagram of Class B commutation.
Answer :
Class B: Resonant Pulse Commutation:
asked
May 21, 2020
by
anonymous
Description : Equivalent circuit of transformer
Answer :
Equivalent Circuit Diagram of Transformer Referred to Primary: V1 -Primary Input voltage I1 - Input Current I0- Exciting current/ No load current Im- Magnetizing component ... equivalent of secondary terminal voltage ZL- Load impedance ZL ′- Primary equivalent of load impedance
asked
May 17, 2020
by
anonymous
Description : Briefly explain how the power factor of an inductive circuit can be improved.
Answer :
As we know that power factor should be corrected to ensure that the current supplied is cost friendly. Meaning the power factor should be around one but not greater than one(0.8-0.9) in a ... an inductive circuit due to the inductive reactance which oppose the change of current in the ac circuit.
asked
May 17, 2020
by
anonymous
Description : Draw equivalent circuit of alternator.
Answer :
Equivalent circuit of alternator
asked
May 6, 2020
by
anonymous
Description : Why does leakage occur in a magnetic circuit?
asked
May 5, 2020
by
anonymous
Description : Describe control of a single lamp from three places. Draw the relevant circuit diagram.
Answer :
Single lamp control from three places- It consists of two way switches & intermediate switch, the circuit diagram is as shown in figure. We require two 2-way switches and one intermediate switch and a lamp ... position of any one switch is changed, then the lamp will be turned off.
asked
May 3, 2020
by
anonymous
Description : Describe the working principle of Thyristor operated dimmer with the help of circuit diagram.
Answer :
Thyristor operated dimmer: A popular thyristor operated dimmer circuit employ TRIAC-DIAC phase control for low AC power control. During each half-cycle, the capacitor charges through (R1+VR1). When the ... time constant {C (R1+VR1)}. Thus by reducing VR1 the lamp brightness can be increased.
asked
May 3, 2020
by
anonymous
Description : Design a temperature detecting circuit assuming a linear temperature (T, in degree Celsius) detecting signal in Voltage (mV) V = 0.2 + 0.1 * T T is from 10 (oC) to 80 (oC) Design an amplifying circuit based on MOSFETs. Output voltage should be larger than 0.5V The output voltage should be linear with ... you show detail about how to detect the temperature, how the circuit work, restriction,... really need the PSPICE circuit and how to simulation. Thank you so much!
Description : Important Terms in Magnetic Circuit
Answer :
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asked
Apr 24, 2020
by
anonymous
Description : Magnetic Circuit and its Analysis
Answer :
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asked
Apr 24, 2020
by
anonymous
Answer :
It is denoted as τ, tau and has the value of 1/RC. We
Description : Basic Circuit Elements Symbols
Answer :
Basic Circuit Elements Symbols
asked
Apr 5, 2020
by
anonymous
Description : Sinusoidal Steady-State Analysis - Using nodal analysis, find node voltages in the circuit.
Answer :
Sinusoidal Steady-State Analysis - Using nodal analysis, find node voltages in the circuit.
asked
Apr 3, 2020
by
anonymous
Description : A parallel RLC circuit has the node equation Determine v(t) using the phasor method.
Answer :
A parallel RLC circuit has the node equation Determine v(t) using the phasor method.
asked
Apr 2, 2020
by
anonymous