Understanding Motor Controls
4th Edition
ISBN: 9781337798686
Author: Stephen L. Herman
Publisher: Delmar Cengage Learning
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Question
Chapter 54, Problem 6RQ
To determine
About the parameter which got amplified other than gain in the amplifier.
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Chapter 54 Solutions
Understanding Motor Controls
Ch. 54 - Prob. 1RQCh. 54 - Prob. 2RQCh. 54 - Prob. 3RQCh. 54 - Prob. 4RQCh. 54 - Prob. 5RQCh. 54 - Prob. 6RQCh. 54 - Name two effects of negative feedback.Ch. 54 - Refer to Figure 548. If resistor R1 is 200 ohms...Ch. 54 - Refer to Figure 54–9. If resistor R1 is 470 ohms...Ch. 54 - What is the purpose of the hysteresis loop when...
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- Refer to Figure 548. If resistor R1 is 200 ohms and resistor R2 is 10 kilohms, what is the gain of the amplifier? Figure 548 Noninverting amplifier connection.arrow_forwardRefer to Figure 54–9. If resistor R1 is 470 ohms and resistor R2 is 47 kilohms, what is the gain of the amplifier? Figure 54-9 Inverting amplifier connection.arrow_forwardThe sensing element which converts the mechanical signal into electrical signal is known as secondar sensing element. Select one: True Falsearrow_forward
- What are the three types of opposition to current flow that impedance represents?arrow_forward15. Find the value of R, that will produce the indicated closed-loop gain in each amplifier in Figure 12-66 Ry W Aj=50 ww 1.0k Figure 12-66 10 kn Ag=-300 Aj=8 12 k V₁₂₁M 2.2k (d) Ag=-75arrow_forward8. An R-L series circuit has a reactive power of 1234 VARs and an apparent power of 4329 VA. By how many degrees are voltage and current out of phase with each other? 9. An R-L series circuit contains a resistor and an inductor. The resistor has a value of 6.5 22. The circuit is connected to 120 V and has a current flow of 12 A. What is the inductive reactance of this circuit? 10. What is the voltage drop across the resistor in the circuit in Question 9? 11. A phase angle meter connected in an R-L series circuit indicates that the current is 28 degrees out of phase with the voltage. What is the circuit power factor? 12. An R-L series circuit has a power factor of 73%. If the apparent power is 560 kVA, what is the true power in the circuit?arrow_forward
- Air-cooled condensers and cooling towers can be cooled by a propeller fan Select the correct response: True Falsearrow_forwardIn the experiment No.4, the core loss component current is given by_ Ic Sinôo lo Sindo lc Cos&o lo Cosoarrow_forwardA sine wave has a maximum peak voltage of 230V what is the voltage after 38 degree of rotationarrow_forward
- 17. If a signal voltage of 10 mVrms is applied to each amplifier in Figure 12-67, what are the output voltages and what is their phase relationship with inputs? 18. Determine the approximate values for each of the following quantities in Figure 12-68 LO ET Spie 2210 W 22 k Figure 12-68 a. In b. l c. Vout d. closed-loop gainarrow_forwardSine wave A has a positive-going zero crossing at 20°. Sine wave B has a positive-going zero crossing at 35°. Determine the phase angle between the two signals. What signal lags ? A A-connected system can have wires. The (resultant) voltage between the hot legs (120V) is The phase angle between the phase voltage and the line voltage of a A-connected generator is degrees. The phase current produced by a certain 240V, Y-connected generator is 12A. The corresponding line current isarrow_forwardThe value of Vg-Vf at critical point is * O infinity two O one zeroarrow_forward
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