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# the fundamental component of output voltage for a full wave bridge inverter is given by

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### Mohammed

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get the fundamental component of output voltage for a full wave bridge inverter is given by from screen.

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Showing 11 to 20 out of 100 Questions

1 2 3 4 5 6

11.

Find the conduction time of the diodes if the SCRs are fired at 0 and T/2 respectively in a single phase half wave inverter with R load.

(a) 0 (b) T/2 (c) 2/T

(d) insufficient data

12.

The output current wave of a single-phase full bridge inverter on RL load is

(a) a sine wave (b) a square wave

(c) a triangular wave

(d) constant dc

13.

Single-phase full bridge inverters requires

(a) 4 SCRs and 2 diodes

(b) 4 SCRs and 4 diodes

(c) 2 SCRs and 4 diodes

(d) 2 SCRs and 2 diodes

14.

The output voltage from a single phase full wave bridge inverter varies from

(a) Vs to –Vs (b) Vs to zero (c) Vs/2 to zero (d) –Vs/2 to Vs/2

15.

In a single phase full wave bridge inverter, when the output is Vs or –Vs

(a) one SCR and one diode are conducting

(b) four SCRs are conducting

(c) two SCRs are conducting

(d) two diodes are conducting

16.

For a full wave bridge inverter, the output voltage (Vo)

(a) Vo = Vs/2 for 0 < t < T/2

(b) Vo = Vs for 0 < t

(c) Vo = Vs for T/2< t < T

(d) Vo = -Vs for T/2< t < 3T/2

17.

For a half wave bridge inverter, the output voltage

(a) Vo = – Vs/2 for 0 < t < T/2

(b) Vo = – Vs/2 for T/2< t

(c) Vo = – Vs for 0 < t < T/2

(d) Vo = Vs/2 for T/2< t < T

18.

The fundamental component of output voltage for a half wave bridge inverter is given by

(a) (4Vs/π) sinωt (b) (2Vs/π) sinωt (c) (Vs/2π) sinωt (d) (Vs)

19.

The fundamental component of output voltage for a full wave bridge inverter is given by

(a) (2Vs/π) sinωt (b) (4Vs/π) sinωt (c) (Vs/2π) sinωt (d) (Vs)

20.

A single phase half bridge inverter has a dc voltage source Vs/2 = 115 V. Find the rms value of the fundamental component of output voltage.

(a) 510 V (b) 103.5 V (c) 120 V (d) 96 V

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## [Solved] Calculate the peak value of the fundamental component of out

Single Phase Full Bridge Inverter: Single Phase Full Bridge Inverter is basically a voltage source inverter. Single Phase Full Bridge Inverter requires a two-

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## Calculate the peak value of the fundamental component of output voltage of a single phase full bridge inverter if the inverter has a DC voltage source of 240 V.

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289 V 240 V 267 V 306 V

Option 4 : 306 V

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## Detailed Solution

Single Phase Full Bridge Inverter:

Single Phase Full Bridge Inverter is basically a voltage source inverter.

Single Phase Full Bridge Inverter requires a two-wire DC input power source suffices the requirement.

The output frequency can be controlled by controlling the turn ON and turn OFF time of the thyristors.

The gating signal and an output voltage waveform of a single-phase full-bridge inverter are shown below:

Formulas:The conduction angle of each diode is φ.The conduction angle of each Thyristor is (π – φ)

Self-commutation is possible only in leading power factor load or underdamped system at circuit turn off time (tc) =

φ φω

Where ω is the fundamental frequency.

Fourier series representation of output voltage,

π

V0n(t)=∑4VDCnπSin(nω)t

: where n= 1,3,5....

Solution:

The fundamental component of voltage =

π

Vo1(t)=∑4VDCπSin(ω)t

Peak value (Vm) = π 4Vsπ Vm π =4×240π

Vm = 305.577 ≈ 306 V

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## More Inverters Questions

Q1. The maximum output voltage of a single phase half bridge inverter as compared to the single phase full bridge inverter is:Q2. For the waveform (as shown below), which of the options is true?Q3. A 1 - phase full bridge VSI has inductor L as load, for a constant source voltage, the current through inductor is -Q4. In CSI if the frequency of output voltage is f Hz, then the frequency of voltage Input to CSI is -Q5. A single phase bridge inverter having square wave output has the DC supply of 48 V and output resistance of 4.8 Ω. The rms value of output is _________.Q6. In a single phase full bridge inverter, which of the following relations is CORRECT?Q7. Invertor converts-Q8. A 3-phase grid-connected voltage source converter with DC link voltage of 1000 V is switched using sinusoidal Pulse Width Modulation (PWM) technique. If the grid phase current is 10 A and the 3-phase complex power supplied by the converter is given by (−4000 − j3000) VA, then the modulation index used in sinusoidal PWM is ___________. (round off to two decimal places)Q9. Consider an ideal full-bridge single-phase DC-AC inverter with a DC bus voltage magnitude of 1000 V. The inverter output voltage v(t) shown below, is obtained when diagonal switches of the inverter are switched with 50 % duty cycle. The inverter feeds a load with a sinusoidal current given by,

i(t)=10sin⁡(ωt−π3) A, where ω=2πT

. The active power, in watts, delivered to the load is _________. (round off to nearest integer)

Q10. A UPS commonly has following parts: (i) rectifier (ii) inverter (iii) static switch Which of the following is true ?

स्रोत : testbook.com

This set of Power Electronics Multiple Choice Questions & Answers (MCQs) focuses on “Single Phase VSI-4”. 1. A single phase full bridge inverter has a dc voltage source Vs = 230 V. Find the rms value of the fundamental component of output voltage. a) 90 V b) 207 V c) 350 V d) 196 V ... Read more

## Power Electronics Questions and Answers – Single Phase VSI-4

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This set of Power Electronics Multiple Choice Questions & Answers (MCQs) focuses on “Single Phase VSI-4”.

1. A single phase full bridge inverter has a dc voltage source Vs = 230 V. Find the rms value of the fundamental component of output voltage.

2. A single phase full bridge inverter has load R = 2 Ω, and dc voltage source Vs = 230 V. Find the rms value of the fundamental load current.

a) 96 A b) 0 A c) 103 A

d) none of the mentioned

3. A certain full bridge type inverter circuit has its rms value of fundamental load current component given by W. The fundamental frequency component of the load current would be given by

a) W sin ωt b) (W/√2) sin ωt c) √2 W sin ωt d) sin ωt View Answer

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4. In a half wave bridge inverter circuit, the power delivered to the load by each source is given by

a) Vs x Is b) (Vs x Is)/2 c) 2(Vs x Is)

d) None of the mentioned

5. In a half wave circuit, forced commutation is essential when the

c) source voltage is below 150 V

d) none of the mentioned

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6. A single phase full bridge inverter circuit, has load R = 2 Ω and dc source Vs = 230 V. Find the value of power delivered to the load in watts only due to the fundamental component of the load current.

7. A single phase full bridge inverter is fed from a dc source such that the fundamental component of output voltage = 230 V. Find the rms value of SCR and diode current respectively, for a R load of 2 Ω.

8. For a full bridge inverter with the following load: R = 2 Ω, XL = 8 Ω and XC = 6 Ω.

a) The output voltage lags the current by 45°

b) The output current lags the voltage by 45°

c) The output current lags the voltage by 90°

d) The output current lags the voltage by more than 90°

9. A single phase full bridge inverter has RLC load. The dc input voltage is 230 V and the output frequency is 50 Hz. Find the expression for the load voltage up to the fifth harmonic.

a) 292 sin 314t + 97.62 sin 314t + 58.57 sin 318t + 28.31 sin 318t + 3.686 sin 318t

b) 292 sin 314t + 97.62 sin (3 x 314t) + 58.57 sin (5 x 318t)

c) 292 sin 314t + 97.62 sin (2 x 314t) + 58.57 sin (3 x 318t) + 28.31 sin (4 x 318t) + 3.686 sin (5 x 318t)

d) 292 sin 512t + 25.62 sin 249t + 6.74 sin 508t

10. A single phase full bridge inverter has RLC load with R = 4 Ω, L = 35 mH and C = 155 μF. The dc input voltage is 230 V and the output frequency is 50 Hz. Find the rms value of the fundamental load current.

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Mohammed 6 day ago

Guys, does anyone know the answer?