A system with a double pole at the origin is unstable since the corresponding term in the time domain________________?

Related Mcqs:

1. According to Bode stability criterion, a system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at frequency for which phase lag is_________________?

   A. 0°
   B. 45°
   C. 90°
   D. 180°

2. “A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency.” This is _______________ criterion?

   A. Bode stability
   B. Nyquist
   C. Routh stability
   D. None of these

3. The root locus method, a pole of a transfer function G(s) is the value of s for which G(s) approaches ___________________?

   A. -1
   B. 0
   C. 1
   D. ∞

4. The closed loop pole of a stable second order system could be_______________?

   A. Both real and positive
   B. Complex conjugate with positive real parts
   C. Both real and negative
   D. One real positive and the other real negative

5. Reset rate is the another term used for ____________ time?

   A. Dead
   B. Integral
   C. Derivative
   D. None of these

6. The term analogous to the electrical current in a thermal system is the_________________?

   A. Temperature difference
   B. Heat flow rate
   C. Heat content in the system
   D. None of these

7. The term analogous to voltage in a single tank system is the_______________?

   A. Heat content of the system
   B. Liquid volume in the tank
   C. Flow rate
   D. Level of liquid

8. Which of the following thermocouples has the least temperature measurement range ?

   A. Copper-constantan
   B. Chromel-alumel
   C. Platinum-platinum/rhodium
   D. Iron-constantan

9. Emf generated in a thermocouple depends on the temperature ___________________?

   A. Of cold junction only
   B. Of hot junction only
   C. Difference between hot and cold junctions
   D. Difference between cold junction and atmospheric temperature

10. Which of the following thermocouples is the most suitable for measuring a temperature of about 1600°C in an oxidizing atmosphere ?

    A. Platinum-platinum + rhodium
    B. Iron-constantan
    C. Copper-constantan
    D. Chromel-alumel