Can you please show the solution of the image below. Thanks! 6. A resistance of 30 ohm is in series with an inductance of 30 mH. What is the frequency inHz so that the power factor angle is 60 lagging?a. 672 Hzb. 762 Hzc. 267 Hzd. 276 Hz7. The current in a series circuit of R = 10 ohms and L = 60 mH lags the applied voltage by80 degrees. What is the impedance in ohms?a. 10 + j0.5671 ohmsb. 10 + j5.671 ohmsc.10 + j56.71 ohmsd. 10+ 567.1 ohms

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Answered: 6. A resistance of 30 ohm is in series…

6. A resistance of 30 ohm is in series with an inductance of 30 mH. What is the frequency in Hz so that the power factor angle is 60 lagging? a. 672 Hz b. 762 Hz c. 267 Hz d. 276 Hz

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.27P: An industrial load consisting of a bank of induction motors consumes 50 kW at a power factor of 0.8...

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Concept explainers

Thermistors

A thermistor is a special type of resistor whose resistance is more temperature-dependent than standard resistors. The resistance of the thermistor decreases with increasing temperature. This is the basic principle of thermistors. This allows the thermistor circuit to detect very small temperature changes that cannot be observed with the Resistance temperature detectors (RTDs) or the thermocouples. Since the resistance of a thermistor is temperature dependent, it can be connected to an electrical circuit to measure body temperature. This high sensitivity to temperature changes makes thermistors very useful for accurately controlling and calibrating temperature measurements. In general, resistance increases with increasing temperature in most metals, but thermistors react negatively.

Question

Can you please show the solution of the image below. Thanks!

6. A resistance of 30 ohm is in series with an inductance of 30 mH. What is the frequency in
Hz so that the power factor angle is 60 lagging?
a. 672 Hz
b. 762 Hz
c. 267 Hz
d. 276 Hz
7. The current in a series circuit of R = 10 ohms and L = 60 mH lags the applied voltage by
80 degrees. What is the impedance in ohms?
a. 10 + j0.5671 ohms
b. 10 + j5.671 ohms
c.10 + j56.71 ohms
d. 10+ 567.1 ohms

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