The figure shows a simplified circuit diagram for an automobile. The equivalent resistor R represents the total electrical load due to spark plugs, lights, radio, fans, starter, rear window defroster, and the like in parallel. Battery Alternator 14.0 VT R₁ 12.0 V R₂ HEM where R₁ = 94.0 m2 and R₂ = 41.0 m2.
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- You are working as an electrician in a large steel manufacturing plant, and you are in the process of doing preventive maintenance on a large DC generator. You have megged both the series and shunt field windings and found that each has over 10 M to ground. Your ohmmeter, however, indicates a resistance of 1.5 across terminals S1andS2. The ohmmeter indicates a resistance of 225 between terminals F1andF2. Are these readings normal for this type machine, or is there a likely problem? Explain your answer.DEGREE: ELECTRICAL ENGINEERING SUBJECT/COURSE: INDUSTRIAL ELECTRONICSTOPIC: TRANSFORMERS NOTE: Please solve in this way. 1. Please have a good handwriting, some of the answers are not readable. Thank you!2. GIVEN. (Include symbols and units)3. ILLUSTRATION (Required).4. Step-by-step SOLUTION with Formulas and Symbols. No Shortcut, no skipping, and detailed as possible5. FINAL ANSWERS must be rounded up to two decimal places with corresponding unit. PROBLEM:The polarity test is performed upon a transformer. If the input voltage is Vin and the voltmeter readings are 121.8 volts (additive) and 110.2 volts (subtractive). Calculate the turns ration.DEGREE: ELECTRICAL ENGINEERING SUBJECT/COURSE: INDUSTRIAL ELECTRONICSTOPIC: TRANSFORMERS NOTE: Please solve in this way. 1. Please have a good handwriting, some of the answers are not readable. Thank you!2. GIVEN. (Include symbols and units)3. ILLUSTRATION (Required).4. Step-by-step SOLUTION with Formulas and Symbols. No Shortcut, no skipping, and detailed as possible5. FINAL ANSWERS must be rounded up to two decimal places with corresponding unit. PROBLEM:An 80:5 current transformer is connected to a 5-amp ammeter. if the latter reads 3.65 amp, what is the line current?
- DEGREE: ELECTRICAL ENGINEERING SUBJECT/COURSE: INDUSTRIAL ELECTRONICSTOPIC: TRANSFORMERS NOTE: Please solve in this way. 1. Please have a good handwriting, some of the answers are not readable. Thank you!2. GIVEN. (Include symbols and units)3. ILLUSTRATION (Required).4. Step-by-step SOLUTION with Formulas and Symbols. No Shortcut, no skipping, and detailed as possible5. FINAL ANSWERS must be rounded up to two decimal places with corresponding unit. PROBLEM:A 50:1 potential transformer is connected to a 150-volt voltmeter for the measurement of the high-side voltage of a distribution transformer. If the voltmeter deflection is 133, what is the transmission line voltage?answer the following questions using the attached picture. (c) To measure the current flow though R1 and the voltage onR5, how should we connect the ammeter and voltmeter?Draw a circuit diagram showing your answer. (d) What is the ideal impedance of1). an ammeter?2). a voltmeter?Subject: CircuitsShow your solution and circuits diagram
- DEGREE: ELECTRICAL ENGINEERING SUBJECT/COURSE: AC MACHINES NOTE: Please solve in this way. 1. Please have a good handwriting, some of the answers are not readable. Thank you!2. GIVEN. (Include symbols and units)3. REQUIRED/FIND/MISSING (with symbol/s and units)4. ILLUSTRATIONS such as diagrams and graphs are Required5. Step-by-step SOLUTION with Formulas and Symbols. No Shortcut, no skipping, and detailed as possible6. FINAL ANSWERS must be rounded up to two decimal places with corresponding unit. PROBLEM:A three phase converter has a rating of 600 kW when operating at unity power factor. Neglecting any change in efficiency, what would be its rating when operating at a power factor of 0.85.Basic Electrical Engineering You have been sent to a new home. The homeowner reports that sometimes the electric furnace trips the 240-V, 60-A circuit breaker connected to it. Upon examination, you find that the furnace contains three 5000-W heating elements designed to turn on in stages. For example, when the thermostat calls for heat, the first 5000-W unit turns on. After some period of time, the second unit will turn on, and then, after another time delay, the third unit will turn on. What do you think the problem is, and so would your recommendation for correcting? Explain your answer.DEGREE: ELECTRICAL ENGINEERING SUBJECT/COURSE: AC CIRCUITS NOTE: Please solve in this way. 1. Please have a good handwriting, some of the answers are not readable. Thank you! 2. GIVEN.(include symbols and units) 3. REQUIRED/FIND/MISSING (with symbol/s) 4. ILLUSTRATION (Required). 5. STEP-by-STEP SOLUTION with Formulas and Symbols. No Shortcut, No skipping, and detailed as possible 6. FINAL ANSWERS must be rounded up to three decimal places PROBLEM: • A star-connected load consists of three identical coils, each of inductance 159.2mH and resistance 50Ω. If the supply frequency is 50Hz and the line current is 3A determine: (a) the phase voltage and (b) the line voltage.