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ECE - Practice Test - 7

Q1:

Steady state error for first order system due to step input is

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ECE Miscellaneous
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Q2:

The Laplace Transform of Step Input signal is

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ECE Miscellaneous
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Q3:

For critically damped system damping ratio is

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ECE Miscellaneous
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Q4:

The steady state error of a stable ‘type 0’ unity feedback system for a unit step function is

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ECE Miscellaneous
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Q5:

The system with transfer function G(𝑠) = 9 𝑠/ (s2+4𝑠+9) is

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ECE Miscellaneous
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Q6:

Time Response Specification of Second order system is/are

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Q7:

Given a unity feedback system with G(s) =K/s (s+4). What is the value of K for a damping ratio of 0.5?

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ECE Miscellaneous
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Q8:

The system with the open loop transfer function 1/s(1+s) is:

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ECE Miscellaneous
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Q9:

Laplace transform of which standard input is 1?

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ECE Miscellaneous
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Q10:

Which among the following is represented by a parabolic input signal?

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Q11:

 The voltage in a single phase half wave inverter varies between

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Q12:

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.

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ECE Miscellaneous
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Q13:

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

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ECE Miscellaneous
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Q14:

 In VSI (voltage source inverters)

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ECE Miscellaneous
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Q15:

In the three-phase bridge inverter, each step consists of

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Q16:

In the 180° mode VSI, ___________ devices conduct at a time.

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ECE Miscellaneous
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Q17:

  _________ is used for critical loads where temporary power failure can cause a great deal of inconvenience.

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ECE Miscellaneous
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Q18:

 Single phase VSI are mainly used in

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ECE Miscellaneous
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Q19:

Static UPS requires __________

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ECE Miscellaneous
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Q20:

PLC can be ___________ in plant to change the sequence of operation.

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Q21:

 The difference between online and offline PLC programming is . . .

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Q22:

Which of the following is not a type of stepper motor?

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Q23:

In permanent magnet stepper motor, the direction of motor is _____ to the directions of the current flowing in winding.

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ECE Miscellaneous
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Q24:

What gets deposited on the plates of a discharged lead-acid battery?

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Q25:

A buchholz relay is used for

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ECE Miscellaneous
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