A single phase semiconverter is feeding a highly inductive load. The c – McqOptions

MCQOPTIONS

1.	A single phase semiconverter is feeding a highly inductive load. The circuit has a freewheeling diode across the load and firing angle is a. During one cycle of input voltage, the total duration of conduction of freewheeling diode is
A.	a
B.	2 a
C.	4 a
D.	0.5 a
Answer» C. 4 a

Discussion

No Comment Found

Related MCQs

<p><strong>Assertion (A):</strong> An ac regulator uses natural commutation</p> <p><strong>Reason (R):</strong> An ac regulator can be used for static on load tap changing of transformer.</p>
<p>A 3 phase induction motor is controlled by voltage and frequency control such that the ratio V/<em>f</em> is constant. At 50 Hz, the starting torque is 100 N-m. At 25 Hz, the starting torque</p>
<p><strong>Assertion (A):</strong> SUS is a PUT and avalanche diode connected between gate and cathode</p> <p><strong>Reason (R):</strong> SBS has two SUS inbuilt together and connected in anti-parallel</p>
<p><strong>Assertion (A):</strong> A GTO can be turned on and turned off by gate pulses</p> <p><strong>Reason (R):</strong> A GTO can be turned off by negative gate pulse.</p>
<p><strong>Assertion (A):</strong> The turn on time of SCR is about 1 to 4 ms.</p> <p><strong>Reason (R):</strong> The turn off time of SCR is about 10 to 300 ms.</p>
<p>In a thyristor the gate lead is connected to the <em>n</em> layer near the <em>p</em> layer to which anode is connected.</p>
<p>Which of the following are included in the architecture of computer?</p> <p>1.Addressing mode, design of CPU</p> <p>2.Instruction set, data format</p> <p>3.Secondary memory, operating system</p> <p>Select the correct answer using the codes given below:</p>
<p>In a single phase full wave ac regulator feeding R-L load, the gate pulses</p>
<p>In a fully controlled bridge converter feeding a resistive load the waveshapes of output voltage and output current</p>
<p><strong>Assertion (A):</strong> When an SCR is conducting, the voltage drop across is about 1 V.</p> <p><strong>Reason (R):</strong> When an SCR is conducting, the junction temperature is about 200 C.</p>