Electrical Engineering (EE)
The value of current I1 in the circuit shown below is
- a)0 A
- b)60 A
- c)20 A
- d)40 A
Correct answer is option 'C'. Can you explain this answer?
The value of current I1 in the circuit shown below is
a)
0 A
b)
60 A
c)
20 A
d)
40 A
SONIKA AMAR answered • 2 hours agoSince XL = XL, therefore given circuit will be at resonance
∴
∴
Assertion (A): When a current changes in a circuit, the magnetic fiux linking the same circuit changes and an emf is induced in the circuit.
Reason (R): Mutual inductances is the bilateral property of the linked circuit.- a)Both A and R are true and R is the correct explanation of A.
- b)Both A and R are true but R is not the correct explanation of A.
- c)A is true but R is false.
- d)A is false but R is true.
Correct answer is option 'B'. Can you explain this answer?
Assertion (A): When a current changes in a circuit, the magnetic fiux linking the same circuit changes and an emf is induced in the circuit.
Reason (R): Mutual inductances is the bilateral property of the linked circuit.
Reason (R): Mutual inductances is the bilateral property of the linked circuit.
a)
Both A and R are true and R is the correct explanation of A.
b)
Both A and R are true but R is not the correct explanation of A.
c)
A is true but R is false.
d)
A is false but R is true.
SARITA NRAIN answered • 2 hours agoThe reason for assertion is that, emf is induced due to Faraday’s law of electromagnetic induction. Reason (R) and assertion (A) are individually true.
The voltage and current in an a.c, circuit are given by
v= 100 sin 314t; i = 10 sin 314 t?
The average power in the circuit is- a)225 W
- b)500 W
- c)250 W
- d)600 W
Correct answer is option 'B'. Can you explain this answer?
The voltage and current in an a.c, circuit are given by
v= 100 sin 314t; i = 10 sin 314 t?
The average power in the circuit is
v= 100 sin 314t; i = 10 sin 314 t?
The average power in the circuit is
a)
225 W
b)
500 W
c)
250 W
d)
600 W
DURGI DEVI answered • 2 hours ago
∴ Pavg = I2R
Now,
(since v and i in phase)
∴
A constant voltage but variable frequency ac source feeds L and C in parallel as shown below:
The impedance seen by source is Z
1. Z is zero when f = 0.
2. Z is zero when f = infinity.
3. Z is infinite when f = 0.
4. Z is infinite when f = infinity.
5. resonant frequency, ωf = 
rad/s.
6. 
7. 
From above, the correct answer is- a)3 , 4 , 7
- b)1 , 2 , 6
- c)3, 4, 5
- d)1, 2, 5
Correct answer is option 'D'. Can you explain this answer?
A constant voltage but variable frequency ac source feeds L and C in parallel as shown below:
The impedance seen by source is Z
1. Z is zero when f = 0.
2. Z is zero when f = infinity.
3. Z is infinite when f = 0.
4. Z is infinite when f = infinity.
5. resonant frequency, ωf =rad/s.
6.
7.
From above, the correct answer is
The impedance seen by source is Z
1. Z is zero when f = 0.
2. Z is zero when f = infinity.
3. Z is infinite when f = 0.
4. Z is infinite when f = infinity.
5. resonant frequency, ωf =
rad/s.6.
7.
From above, the correct answer is
a)
3 , 4 , 7
b)
1 , 2 , 6
c)
3, 4, 5
d)
1, 2, 5
RAJNI DEVI answered • 2 hours agoResonant frequency,
Also,
When f = 0, ω = 0 and z = 0.
When f = ∞, co = ∞ and z= 0.
Also,
When f = 0, ω = 0 and z = 0.
When f = ∞, co = ∞ and z= 0.
The power loss in watts in the resistor R shown below is
- a)175 watts
- b)25 watts
- c)225 watts
- d)62.5 watts
Correct answer is option 'A'. Can you explain this answer?
The power loss in watts in the resistor R shown below is
a)
175 watts
b)
25 watts
c)
225 watts
d)
62.5 watts
KIRNA DEVI answered • 13 hours agoVR = (10 + 5 VR) x R
Given, VR = 5 V
So, 5 = ( 10+ 5 x 5 ) R
or,
∴ Power loss in R is
Given, VR = 5 V
So, 5 = ( 10+ 5 x 5 ) R
or,
∴ Power loss in R is
The resonant frequency of the given series circuit is
- a)
- b)
- c)
- d)
Correct answer is option 'B'. Can you explain this answer?
The resonant frequency of the given series circuit is
a)
b)
c)
d)
NAINCY PRAKASH answered • 13 hours agoLeq = L + L + 2 M
= 2 + 2 + 2 x 1 = 6 H
∴
= 2 + 2 + 2 x 1 = 6 H
∴
In a purely resistive circuit, the average power
Pav is______the peak power Pmax.- a)double
- b)non-half of
- c)one-fourth of
- d)equal to
Correct answer is option 'B'. Can you explain this answer?
In a purely resistive circuit, the average power
Pav is______the peak power Pmax.
Pav is______the peak power Pmax.
a)
double
b)
non-half of
c)
one-fourth of
d)
equal to
INDU SHARMA answered • 13 hours agoInstantaneous power in a purely resistive circuit is
∴
∴
The equivalent inductance for the following inductive circuit is
- a)28 H
- b)30 H
- c)32 H
- d)34 H
Correct answer is option 'B'. Can you explain this answer?
The equivalent inductance for the following inductive circuit is
a)
28 H
b)
30 H
c)
32 H
d)
34 H
DIVYA CHAUHAN answered • 13 hours agoLeq = (10 + 2-2) + (10 + 2 - 2)+ (10 + 2 -2 ) = 30 H
What is the equivalent inductance between the terminals A and B for the circuit shown below? (Given, M= 111)
- a)
- b)
- c)OH
- d)
Correct answer is option 'A'. Can you explain this answer?
What is the equivalent inductance between the terminals A and B for the circuit shown below? (Given, M= 111)
a)
b)
c)
OH
d)
JYOTI RANDEEP answered • 13 hours agoDue to same polarity, the effect of mutual inductance will he positive.
∴
∴
In series circuit shown below, for series resonant frequency of 1 rad/s, the value of coupling coefficient K will be
- a)1.0
- b)0.5
- c)0.25
- d)zero
Correct answer is option 'C'. Can you explain this answer?
In series circuit shown below, for series resonant frequency of 1 rad/s, the value of coupling coefficient K will be
a)
1.0
b)
0.5
c)
0.25
d)
zero
SUMAN LATA answered • 13 hours agoUsing coupling coefficient formula, wo have
Now, for resonance,
or,
or, 15 + 12 k = 18
or,
Now, for resonance,
or,
or, 15 + 12 k = 18
or,
AARYAN RAVI asked • 1 hour agoFigure shown below represents a d.c. 10 V voltage source as well as a 10 V a.c. 50 Hz voltage source while Z1 and Z2 are two unknown impedances. When Z1 is connected across 10V d.c. source, it draws a current of 10 A while it draws a current of 8 A if connected across 10V a.c. source.
Now, when Z2 is connected across 10 V d.c. source, it does not draw any current while it draws a current of 5 A if connected across 10 V a.c. source.
Q. What are the elements in Z1 and Z2?- a)Z1 = (1 - j0 .25) Ω , Z2 = j2 Ω
- b)Z1 = (1 + j0 .75) Ω , Z2 = -j2 Ω
- c)Z1 = (1 - j0.25) Ω, Z2 = -j2 Ω
- d)Z1 = (1 + j0.25) Ω, Z2 = j2 Ω
Correct answer is option 'B'. Can you explain this answer?
Figure shown below represents a d.c. 10 V voltage source as well as a 10 V a.c. 50 Hz voltage source while Z1 and Z2 are two unknown impedances. When Z1 is connected across 10V d.c. source, it draws a current of 10 A while it draws a current of 8 A if connected across 10V a.c. source.
Now, when Z2 is connected across 10 V d.c. source, it does not draw any current while it draws a current of 5 A if connected across 10 V a.c. source.
Q. What are the elements in Z1 and Z2?
Now, when Z2 is connected across 10 V d.c. source, it does not draw any current while it draws a current of 5 A if connected across 10 V a.c. source.
Q. What are the elements in Z1 and Z2?
a)
Z1 = (1 - j0 .25) Ω , Z2 = j2 Ω
b)
Z1 = (1 + j0 .75) Ω , Z2 = -j2 Ω
c)
Z1 = (1 - j0.25) Ω, Z2 = -j2 Ω
d)
Z1 = (1 + j0.25) Ω, Z2 = j2 Ω
The power consumed in an inductive circuit will be- a)VIcosφ
- b)VIsinφ
- c)VI
- d)none of these
Correct answer is option 'A'. Can you explain this answer?
The power consumed in an inductive circuit will be
a)
VIcosφ
b)
VIsinφ
c)
VI
d)
none of these
ANJU BALA answered • 13 hours agoIn a purely inductive circuit, power consumed = Q = VIsin φ. In inductive circuit (having both R and L) power is consumed by resistor R which is P = VI cos φ.
The overall inductance of two coils connected in series, with mutual inductance opposing selfinductance is L1; with mutual inductance aiding self-inductance the overall inductance is L2. The mutual inductance Mis given by- a)(L1 - L2)
- b)
- c)
- d)
Correct answer is option 'C'. Can you explain this answer?
The overall inductance of two coils connected in series, with mutual inductance opposing selfinductance is L1; with mutual inductance aiding self-inductance the overall inductance is L2. The mutual inductance Mis given by
a)
(L1 - L2)
b)
c)
d)
ANITA KUMARI answered • 13 hours ago
Let the self inductances of two coils be L'1 and L'2 respectively.
Then, L1 = L'1 + L'2 - 2M (Foropposing) and L2 = L'1 + L'2 + 2M (For adding)
So, L2 - L1 = 4M
or,
SAMARTH NEGI asked • 1 hour agoA two terminal black box contains one of the R-L-C elements. When the black box is connected to a 220 V ac supply, the current through the source is I. When a capacitance of 0.1 F is inserted in series between the source and the box, the current through the source is 2I The element is- a)a resistance
- b)an inductance
- c)a capacitance
- d)it is not possible to determine the element
Correct answer is option 'B'. Can you explain this answer?
A two terminal black box contains one of the R-L-C elements. When the black box is connected to a 220 V ac supply, the current through the source is I. When a capacitance of 0.1 F is inserted in series between the source and the box, the current through the source is 2I The element is
a)
a resistance
b)
an inductance
c)
a capacitance
d)
it is not possible to determine the element
A non-alternating periodic waveform is shown below, It’s from factor is
- a)2√2
- b)1/√2
- c)√2
- d)2
Correct answer is option 'C'. Can you explain this answer?
A non-alternating periodic waveform is shown below, It’s from factor is
a)
2√2
b)
1/√2
c)
√2
d)
2
SEEMA DEVI answered • 13 hours agoHere, time period is, T = 20 ms; between 10 ms < t < 20 ms, i(t) = 0 A.
∴
Also,
= 50 x 0.01 =0.5 A
∴
∴
Also,
= 50 x 0.01 =0.5 A
∴
SAURABH KUMAR asked • 1 hour ago A series circuit containing passive elements has the following current and applied voltage:
The circuit elements- a)may be resistance and inductance
- b)may be inductance, capacitance and resistance
- c)either (a) or (b)
- d)may be resistance and capacitance
Correct answer is option 'C'. Can you explain this answer?
A series circuit containing passive elements has the following current and applied voltage:
The circuit elements
The circuit elements
a)
may be resistance and inductance
b)
may be inductance, capacitance and resistance
c)
either (a) or (b)
d)
may be resistance and capacitance
VISHAL SHARMA asked • 1 hour agoAssertion (A): In an alternating circuit, if the current is (4 - j3) amperes and the impressed voltage is (100 - j50) volts, the reactive power in the circuit is 100 VA.
Reason (R): True power is the real part of (VI).- a)Both A and R are true and R is the correct explanation of A.
- b)Both A and R are true but R is not the correct explanation of A.
- c)A is true but R is false.
- d)A is false but R is true.
Correct answer is option 'D'. Can you explain this answer?
Assertion (A): In an alternating circuit, if the current is (4 - j3) amperes and the impressed voltage is (100 - j50) volts, the reactive power in the circuit is 100 VA.
Reason (R): True power is the real part of (VI).
Reason (R): True power is the real part of (VI).
a)
Both A and R are true and R is the correct explanation of A.
b)
Both A and R are true but R is not the correct explanation of A.
c)
A is true but R is false.
d)
A is false but R is true.
Kanhai Lal asked • 8 hours agoIn a split phase motor- a)the starting winding is connected through a centrifugal switch
- b)the running winding is connected through a centrifugal switch
- c)both starting and running windings are connected through a centrifugal switch
- d)centrifugal switch is used to control supply voltage
Correct answer is option 'A'. Can you explain this answer?
In a split phase motor
a)
the starting winding is connected through a centrifugal switch
b)
the running winding is connected through a centrifugal switch
c)
both starting and running windings are connected through a centrifugal switch
d)
centrifugal switch is used to control supply voltage
Vaishali More asked • 8 hours agoAssertion (A): The TTL output acts as a current sink in low state Reason (R): The TTL input current is largest in low state.- a)Both A and R are correct and R is correct explanation of A
- b)Both A and R are correct but R is not correct explanation of A
- c)A is true, R is false
- d)A is false, R is true
Correct answer is option 'B'. Can you explain this answer?
Assertion (A): The TTL output acts as a current sink in low state
Reason (R): The TTL input current is largest in low state.
a)
Both A and R are correct and R is correct explanation of A
b)
Both A and R are correct but R is not correct explanation of A
c)
A is true, R is false
d)
A is false, R is true
Amit Parashar asked • 9 hours agoA 50 Hz, 11 kV, 3 phase alternator with earthed neutral having a reactance of 3 ohms per phase and is connected to a bus bar through a circuit breaker, if the distributed capacitance upto CB between the phase and neutral is 0.01 μ F.What is the peak re striking voltage?- a)18.36 kV
- b)17.96 kV
- c)15.96 kV
- d)12.65 kV
Correct answer is option 'B'. Can you explain this answer?
A 50 Hz, 11 kV, 3 phase alternator with earthed neutral having a reactance of 3 ohms per phase and is connected to a bus bar through a circuit breaker, if the distributed capacitance upto CB between the phase and neutral is 0.01 μ F.
What is the peak re striking voltage?
a)
18.36 kV
b)
17.96 kV
c)
15.96 kV
d)
12.65 kV
Satyajit Padhi asked • 10 hours agoConsider the following statements:
1. The effect of feedback is to reduce the system error.
2. Feedback increases the gain of the system in one frequency range but decreases in another.
3. Feedback can cause a system that is originally stable to become unstable.
Which of these statements are correct ?- a)1, 2 and 3
- b)1 and 2
- c)2 and 3
- d)1 and 3
Correct answer is option 'D'. Can you explain this answer?
Consider the following statements:
1. The effect of feedback is to reduce the system error.
2. Feedback increases the gain of the system in one frequency range but decreases in another.
3. Feedback can cause a system that is originally stable to become unstable.
Which of these statements are correct ?
1. The effect of feedback is to reduce the system error.
2. Feedback increases the gain of the system in one frequency range but decreases in another.
3. Feedback can cause a system that is originally stable to become unstable.
Which of these statements are correct ?
a)
1, 2 and 3
b)
1 and 2
c)
2 and 3
d)
1 and 3
Jeya Kumar asked • 12 hours agoA 2-terminal network consist of one of the RLC elements. The element is connected to an ac supply. The current through the element is IA when an inductor is inserted in series between the source and element 2IA the current through the element becomes. What is this element ?- a)A resistor
- b)An inductor
- c)A capacitor
- d)Cannot be a single element
Correct answer is option 'C'. Can you explain this answer?
A 2-terminal network consist of one of the RLC elements. The element is connected to an ac supply. The current through the element is IA when an inductor is inserted in series between the source and element 2IA the current through the element becomes. What is this element ?
a)
A resistor
b)
An inductor
c)
A capacitor
d)
Cannot be a single element
Bhavan Verma asked • 13 hours agoA power diode is in the forward conduction mode and the forward current is now decreased. The reverse recovery time of the diode is trr and the rate of fall of the diode current is di/dt. What is the stored charge?- a)
- b)
- c)
- d)
Correct answer is option 'B'. Can you explain this answer?
A power diode is in the forward conduction mode and the forward current is now decreased. The reverse recovery time of the diode is trr and the rate of fall of the diode current is di/dt. What is the stored charge?
a)
b)
c)
d)
Sanskruti Mahajan asked • 16 hours agoWhat happens when the centrifugal switch in the starting winding of a single - phase induction motor fails to open ?- a)The motor stops quickly
- b)The starting winding will overheat
- c)The motor runs at reduced speed
- d)None of the above
Correct answer is option 'B'. Can you explain this answer?
What happens when the centrifugal switch in the starting winding of a single - phase induction motor fails to open ?
a)
The motor stops quickly
b)
The starting winding will overheat
c)
The motor runs at reduced speed
d)
None of the above
Vipin Azad asked • 16 hours agoA d.c. to d.c. chopper operates from a 48 V battery source into a resistive load
of 24 f~. The frequency of the chopper is set to 250Hz. What is the average
and rms load current and load power values when (a) chopper on-time is 1 ms,
(b) chopper on-time is 3 ms.- a)6W
- b)12W
- c)24W
- d)48W
Correct answer is option 'C'. Can you explain this answer?
A d.c. to d.c. chopper operates from a 48 V battery source into a resistive load
of 24 f~. The frequency of the chopper is set to 250Hz. What is the average
and rms load current and load power values when (a) chopper on-time is 1 ms,
(b) chopper on-time is 3 ms.
of 24 f~. The frequency of the chopper is set to 250Hz. What is the average
and rms load current and load power values when (a) chopper on-time is 1 ms,
(b) chopper on-time is 3 ms.
a)
6W
b)
12W
c)
24W
d)
48W
Sunil Manjani asked • 16 hours agoDiffraction of electromagnetic waves- a)is caused by reflections from the ground
- b)arises only with spherical wave fronts
- c)will occur when the waves pass through a large slot
- d)may occur around the edge of a sharp obstacle
Correct answer is option 'D'. Can you explain this answer?
Diffraction of electromagnetic waves
a)
is caused by reflections from the ground
b)
arises only with spherical wave fronts
c)
will occur when the waves pass through a large slot
d)
may occur around the edge of a sharp obstacle
Potu Madhavi asked • 16 hours agoFor the same voltage drop, increasing the voltage of a distributor n-times.- a)reduces the x-section of the conductor by n times
- b)increases the x-section of the conductor by n times
- c)reduces the x-section of the conductor by n2 times
- d)increases the x-section of the conductor by n2 times.
Correct answer is option 'A'. Can you explain this answer?
For the same voltage drop, increasing the voltage of a distributor n-times.
a)
reduces the x-section of the conductor by n times
b)
increases the x-section of the conductor by n times
c)
reduces the x-section of the conductor by n2 times
d)
increases the x-section of the conductor by n2 times.
Shaik Shahina asked • 17 hours agoconsider the following statements :
1. The effect of feedback is to reduce the system error
2. Feedback increases the gain of the system in one frequency range but decreases in another.
3. Feedback can cause a system that is originally stable to become unstable
Which of these statements are correct ?
- a)1, 2 and 3
- b)1 and 2
- c)2 and 3
- d)1 and 3
Correct answer is option 'D'. Can you explain this answer?
consider the following statements :
1. The effect of feedback is to reduce the system error
2. Feedback increases the gain of the system in one frequency range but decreases in another.
3. Feedback can cause a system that is originally stable to become unstable
Which of these statements are correct ?
1. The effect of feedback is to reduce the system error
2. Feedback increases the gain of the system in one frequency range but decreases in another.
3. Feedback can cause a system that is originally stable to become unstable
Which of these statements are correct ?
a)
1, 2 and 3
b)
1 and 2
c)
2 and 3
d)
1 and 3
Jitendra Kumar asked • 17 hours agoThe data sheet for a certain JFET (Junction Field Effect Transistor) indicates that IDSS (drain to source current with gate shorted) = 15 mA and VGS (off) (Cut – off value of gate to source voltage) = – 5V.- a)58.8 mA
- b)29.4 mA
- c)9.6 mA
- d)5.4 mA
Correct answer is option 'D'. Can you explain this answer?
The data sheet for a certain JFET (Junction Field Effect Transistor) indicates that IDSS (drain to source current with gate shorted) = 15 mA and VGS (off) (Cut – off value of gate to source voltage) = – 5V.
a)
58.8 mA
b)
29.4 mA
c)
9.6 mA
d)
5.4 mA
Taranhaar Kumar asked • 20 hours agoVoltage remaining constant, if the frequency is increased then- a)eddy current losses will decrease
- b)hysteresis loss will decrease
- c)eddy current losses will remain unchanged
- d)hysteresis losses will remain unchanged
Correct answer is option 'C'. Can you explain this answer?
Voltage remaining constant, if the frequency is increased then
a)
eddy current losses will decrease
b)
hysteresis loss will decrease
c)
eddy current losses will remain unchanged
d)
hysteresis losses will remain unchanged
Anubhab Kundu asked • 20 hours agoWhen is tanφ negative?- a)When inductive reactance is less than capacitive reactance
- b)When inductive reactance is greater than capacitive reactance
- c)When inductive reactance is equal to capacitive reactance
- d)When inductive reactance is zero
Correct answer is option 'C'. Can you explain this answer?
When is tanφ negative?
a)
When inductive reactance is less than capacitive reactance
b)
When inductive reactance is greater than capacitive reactance
c)
When inductive reactance is equal to capacitive reactance
d)
When inductive reactance is zero
Venkata Krishna asked • 20 hours agoIf for sinusoids of same frequency but ofdifferent amplitudes and phase difference areadded the resultant is a- a)sinusoid of the same frequency
- b)sinusoid of double the original frequency
- c)sinusoid of half the original frequency
- d)non sinusoid
Correct answer is option 'B'. Can you explain this answer?
If for sinusoids of same frequency but ofdifferent amplitudes and phase difference areadded the resultant is a
a)
sinusoid of the same frequency
b)
sinusoid of double the original frequency
c)
sinusoid of half the original frequency
d)
non sinusoid
Sunil Manjani asked • 21 hours agoThe Hartley-Shannon theorem sets a limit on the- a)highest frequency that may be sent over a given channel
- b)maximum capacity of channel with a given noise level
- c)maximum number of coding levels in a channel with a given noise level
- d)maximum number of quantizing levels in a channel with a given noise level
Correct answer is option 'B'. Can you explain this answer?
The Hartley-Shannon theorem sets a limit on the
a)
highest frequency that may be sent over a given channel
b)
maximum capacity of channel with a given noise level
c)
maximum number of coding levels in a channel with a given noise level
d)
maximum number of quantizing levels in a channel with a given noise level
Manoj Pawar asked • 21 hours agoIn the optimum generator scheduling different power plants, the minimum fuel cost is obtained when- a)only the incremental fuel cost of each plant is the same
- b)the penalty factor of each plant is the same
- c)the ratio of the incremental fuel cost to the penalty factor of each plant is the same.
- d)the incremental fuel cost of each plant multiplied by its penalty factor is the same
Correct answer is option 'D'. Can you explain this answer?
In the optimum generator scheduling different power plants, the minimum fuel cost is obtained when
a)
only the incremental fuel cost of each plant is the same
b)
the penalty factor of each plant is the same
c)
the ratio of the incremental fuel cost to the penalty factor of each plant is the same.
d)
the incremental fuel cost of each plant multiplied by its penalty factor is the same
Manoj Sharma asked • 21 hours agoIn a thyrite lightning arrester the resistance- a)varies linearly with applied voltage
- b)increases with the applied voltage
- c)Decreases linearly with the applied voltage
- d)is high at low current and low at high current
Correct answer is option 'D'. Can you explain this answer?
In a thyrite lightning arrester the resistance
a)
varies linearly with applied voltage
b)
increases with the applied voltage
c)
Decreases linearly with the applied voltage
d)
is high at low current and low at high current
Rupak Mandal asked • 22 hours agoIn a synchronous motor, the breakdown torque is- a)directly proportional to applied voltage
- b)directly proportional to the square of the applied voltage
- c)inversely proportional to applied voltage
- d)none of the above
Correct answer is option 'A'. Can you explain this answer?
In a synchronous motor, the breakdown torque is
a)
directly proportional to applied voltage
b)
directly proportional to the square of the applied voltage
c)
inversely proportional to applied voltage
d)
none of the above
Shital Devake asked • 23 hours agoGalloping in transmission line conductors arises generally due to- a)Asymmetrical layers of ice formation
- b)Vortex phenomenon in light winds
- c)Heavy weight of the line conductors
- d)Adoption of horizontal conductor configurations
Correct answer is option 'A'. Can you explain this answer?
Galloping in transmission line conductors arises generally due to
a)
Asymmetrical layers of ice formation
b)
Vortex phenomenon in light winds
c)
Heavy weight of the line conductors
d)
Adoption of horizontal conductor configurations
Pinkesh Patel asked • yesterdayThe Voltage Source Inverter (VSI) shown in the figure below is switched to provide a 50Hz, square wave ac output voltage vo across an RL load. Reference polarity of vo and reference direction of the output current io are indicated in the figure. It is given that R = 3 ohms, L = 9.55mH.
Appropriate transition i.e., Zero Voltage Switching (ZVS) / Zero Current Switching (ZCS) of the IGBTs during turn-on / turn-off is- a)ZVS during turn off
- b)ZVS during turn-on
- c)ZCS during turn off
- d)ZCS during turn-on
Correct answer is option 'D'. Can you explain this answer?
The Voltage Source Inverter (VSI) shown in the figure below is switched to provide a 50Hz, square wave ac output voltage vo across an RL load. Reference polarity of vo and reference direction of the output current io are indicated in the figure. It is given that R = 3 ohms, L = 9.55mH.
Appropriate transition i.e., Zero Voltage Switching (ZVS) / Zero Current Switching (ZCS) of the IGBTs during turn-on / turn-off is
a)
ZVS during turn off
b)
ZVS during turn-on
c)
ZCS during turn off
d)
ZCS during turn-on
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