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ECE - Practice Test - 12

Q1:

 Chopper converts

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Q2:

Cycloconverter converts

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Q3:

Which can be used as phase controller rectifier

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Q4:

For a thyristor, holding current is

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Q5:

Step-down cycloconverter means

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Q6:

CFI inverter means

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Q7:

Type B DC chopper is

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Q8:

Zener diode is normally operated in

 

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Q9:

In a step-down DC chopper, the absence of off time (duty cycle =1) means output is

 

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Q10:

Class B thyristor commutation is also called

 

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Q11:

Class F thyristor commutation is also called

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Q12:

SMPS full form is

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Q13:

When freewheeling diode is conducting, the voltage across the diode is equal to

 

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Q14:

Extinction angle is observed when

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Q15:

LASCR is

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Q16:

Which thyristor triggering is most preferable?

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Q17:

In a BJT, the current amplification factor in common base mode is

 

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Q18:

The terminals of MOSFET are called

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Q19:

Thyristor commutation means

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Q20:

 An aperiodic discrete sequence has total L number of non-zero samples, and the

   period of its aliased version is N. if N < L occurs, it is called

   

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Q21:

A Digital filter is said to be IIR if

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Q22:

A causal sequence always has

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Q23:

The number of multiplications required in FFT is (if the number of sample is N)

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Q24:

Which of these filters is completely monotonic in frequency domain

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Q25:

The period of cos ( 5πn ) is

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