Govt Exams Mock Test FREE | Online Quiz Competition

Q1. In a stable control system saturation can cause which of the following ?

Low-level oscillations

High-level oscillations

Conditional stability

Overdamping

Q2. Open Loop transfer function of a system is \(G(s)\). If a negative unity feedback is added to the system. Its transfer function will be

\(\frac{G(s)}{(1-G(s))}\)

\(\frac{G(s)}{(1+G(s))}\)

\((G(s)+1)\)

\((G(s)-1)\)

Q3. Mass in force-voltage analogy is analogous to

Inductance

Charge

Current

Resistance

Q4. Which one of the following is not the criterion to select potentiometer in a control system?

Accuracy

Noise

Time Response

Frequency Response

Q5. In pneumatic control systems the control valve used as final control element converts

pressure signal to electric signal

pressure signal to position change

electric signal to pressure signal

position change to pressure signal

Q6. For non-linear systems stability cannot be determined due to:

Possible existence of multiple equilibrium states

No correspondence between bounded input and bounded output stability and asymptotic stability

Output may be bounded for the particular bounded input but may not be bounded for other bounded inputs

All of the mentioned

Q7. Automatic Reset Control action is done by ____________.

Integral Controller

Derivative controller

On-off controller

Proportional Controller

Q8. The gain of 6 dB/octave is equal to

-6 dB/decade

6 dB/decade

20 dB/decade

40 dB/decade

Q9. An AC induction motor is used for a speed control application. It is driven from an inverter with a constant V/f control. The motor name plate details are as follows: V= 415V, 3-phase, f=50 Hz, N = 2850 rpm The motor is run with the inverter output frequency set at 40 Hz, and with half the rated slip. The running speed of the motor is

2400 rpm

2280 rpm

2340 rpm

2790 rpm

Q10. A 1 KVA, single phase, 50 Hz, 100/250 V transformer gives the following results on short circuit test conducted at high voltage side:
Voltmeter reading: 12.5 V; Ammeter reading: 4 A; wattmeter readin: 80 W.
The equivalent resistance referred to high voltage side will be _______.

20 ohms

5 ohms

10 ohms

40 ohms

Quiz

Year 2025

February
Week # 1 Quiz 5

Q1. In a stable control system saturation can cause which of the following ?

Q2. Open Loop transfer function of a system is \(G(s)\). If a negative unity feedback is added to the system. Its transfer function will be

Q3. Mass in force-voltage analogy is analogous to

Q4. Which one of the following is not the criterion to select potentiometer in a control system?

Q5. In pneumatic control systems the control valve used as final control element converts

Q6. For non-linear systems stability cannot be determined due to:

Q7. Automatic Reset Control action is done by ____________.

Q8. The gain of 6 dB/octave is equal to

Q10. A 1 KVA, single phase, 50 Hz, 100/250 V transformer gives the following results on short circuit test conducted at high voltage side:
Voltmeter reading: 12.5 V; Ammeter reading: 4 A; wattmeter readin: 80 W.
The equivalent resistance referred to high voltage side will be _______.

Quiz

Year 2025

January Week # 2 Expire on 07 Feb 2025

January Week # 3 Expire on 14 Feb 2025

January Week # 4 Expire on 21 Feb 2025

February Week # 1 Expire on 28 Feb 2025

February Week # 1 Quiz 5

Q1. In a stable control system saturation can cause which of the following ?

Q2. Open Loop transfer function of a system is \(G(s)\). If a negative unity feedback is added to the system. Its transfer function will be

Q3. Mass in force-voltage analogy is analogous to

Q4. Which one of the following is not the criterion to select potentiometer in a control system?

Q5. In pneumatic control systems the control valve used as final control element converts

Q6. For non-linear systems stability cannot be determined due to:

Q7. Automatic Reset Control action is done by ____________.

Q8. The gain of 6 dB/octave is equal to

Q10. A 1 KVA, single phase, 50 Hz, 100/250 V transformer gives the following results on short circuit test conducted at high voltage side: Voltmeter reading: 12.5 V; Ammeter reading: 4 A; wattmeter readin: 80 W. The equivalent resistance referred to high voltage side will be _______.

Record & Track Your Performance

February
Week # 1 Quiz 5

Q10. A 1 KVA, single phase, 50 Hz, 100/250 V transformer gives the following results on short circuit test conducted at high voltage side:
Voltmeter reading: 12.5 V; Ammeter reading: 4 A; wattmeter readin: 80 W.
The equivalent resistance referred to high voltage side will be _______.