Question
Reason (R): A thyristor can conduct only when it is forward biased.
a.
Both A and R are correct and R is correct explanation of A
b.
Both A and R correct but R is not correct explanation of A
c.
A is correct but R is wrong
d.
A is wrong but R is correct
Posted under Electronics and Communication Engineering
Interact with the Community - Share Your Thoughts
Uncertain About the Answer? Seek Clarification Here.
Understand the Explanation? Include it Here.
Q. Assertion (A): The circuit of figure thyristor will conduct for 180° during positive half cycle if it is continuously fired. Reason (R): A thyristor can conduct only when it is...
Similar Questions
Explore Relevant Multiple Choice Questions (MCQs)
Q. In the below figure, the load is highly inductive. The firing angle is a for each of the thyristors. The periods of conduction of Th1 and Th2 respectively are
View solution
Q. The condition for underdamped oscillations in a series RLC circuit is
View solution
Q. A single phase fully controlled bridge converter is fed by a voltage Vm sin ωt. The average and rms values of output voltage are
View solution
Q. Which of the following is correct for a BJT?
View solution
Q. A fully controlled bridge converter is feeding an RLE load. The load current is I₀. The input voltage is Vm sin ωt. The KVL equation to find firing angle α is
View solution
Q. The duty cycle of a step down chopper is
View solution
Q. A rectifier is fed by a transformer. The rms voltage and current at secondary of transformer are Vs and Is. Output dc power is Vdc Idc and output ac power is (Vrms ) (Irms), Transformer utilisation factor TUF is
View solution
Q. If Ar and Ac are the amplitudes of reference and control signals, the modulation index M is
View solution
Q. For a single phase half wave converter feeding a resistive load, the firing angle a. The waveshape in below figure is for
View solution
Q. A single phase fully controlled bridge converter is feeding an RLE load. Input voltage is Vm sin ωt and firing angle is α. If average current is I₀, then
View solution
Q. Which of the following is not between F2 layer and D layer?
View solution
Q. A cycloconverter can be
View solution
Q. In a 3 phase fully controlled converter the firing frequency is
View solution
Q. Two thyristor of same rating and same specifications
View solution
Q. The amount of dielectric heating is inversely proportional to frequency.
View solution
Q. A semiconverter feeding an RLE load operates in
View solution
Q. The phenomenon of overlap in converter operation due to
View solution
Q. A thyristor has a maximum allowable junction temperature of 120°C and the ambient temperature is 40°C. If thermal resistance is 1.6° C/W, the maximum allowable internal power dissipation is
View solution
Q. For a 12 pulse operation, the two 6 pulse units are fed by
View solution
Q. In a single phase full wave converter (M - 2 connection) feeding a highly inductive load, the firing angle for each thyristor is a in the respective half cycle. The period of conduction of each thyristor is
View solution
Recommended Subjects
Are you eager to expand your knowledge beyond Electronics and Communication Engineering? We've handpicked a range of related categories that you might find intriguing.
Click on the categories below to discover a wealth of MCQs and enrich your understanding of various subjects. Happy exploring!
