A buck converter is used to control a d.c. motor. The input to a dc buck converter is 200 V. Find the duty ratio of the pulse to be applied to the converter to produce 150 V across the d.c. motor.

A buck converter is used to control a d.c. motor. The input to a dc bu

1.	A buck converter is used to control a d.c. motor. The input to a dc buck converter is 200 V. Find the duty ratio of the pulse to be applied to the converter to produce 150 V across the d.c. motor.
A.	60%
B.	50%
C.	35%
D.	75%
Answer» E.

Discussion

No Comment Found

Related MCQs

If chopper frequency is 1 kHz and ON time is 0.5 m sec., the duty cycle is
A Buck - converter is:
In line-side commutated circuit shown which component is to be replaced by an energy recovery transformer and a diode in order to limit overcharging of the capacitor?
A switched-capacitor network is/are1. Time variant sample data network2. Non linear network3. Linear time invariant network
A buck converter has an input current of 2.4 A while required output current is 6 A. What will be the duty cycle of the converter? [Assume lossless system]
Directions: It consists of two statements, one labelled as the ‘Statement (I)’ and the other as ‘Statement (II)’. You are to examine these two statements carefully and select the answer using the codes given below:Statement (I): A forward dc-to-dc converter require a minimum load at the output.Statement (II): Without minimum load excess output voltage can be produced.
A dc chopper is fed from 200 V dc. Output voltage is rectangular pulses with Ton = 1 ms and T = 3 ms. The average output voltage and ripple factor for this chopper are
A step-down chopper operates from a DC voltage source Vs and feeds a DC motor armature with counter emf Eb. From oscilloscope traces it is found that current increases for time tr, falls to zero over a time tf and remains zero for a time t0 in every chopping cycle. Then the average voltage across the motor would be
A DC chopper remains ON for 25μs and OFF for 5μs. What is the value of chopper frequency?
A chopper circuit is operating on TRC control mode at a frequency of 2 kHz on a 230 V dc supply. For output voltage of 170 V, the conduction and blocking periods of a thyristor in each cycle are respectively

A buck converter is used to control a d.c. motor. The input to a dc buck converter is 200 V. Find the duty ratio of the pulse to be applied to the converter to produce 150 V across the d.c. motor.

Discussion

No Comment Found

Related MCQs

Reply to Comment