a rheostat is used mcq
A variable resistor used to control voltage is..... (A) Rheostat (B) Potentiometer (C) Both a and b (D) None 49. www.gtu-mcq.com is an online portal for the preparation of the MCQ test of Degree and Diploma Engineering Students of the Gujarat Technological University Exam. Which instrument is used for measuring electric potential? 2. An electric iron draws a current 4 A when connected to a 220 … In this section of Digital Logic Design - Digital Electronics - D/A (D to A - Digital to Analog) and A/D (A to D - Analog to Digital) Converters MCQs (Multiple Choice Questions and Answers),We have tried to cover the below lists of topics.All these MCQs will help you prepare for the various Competitive Exams and University Level Exams. A voltage source, a load, and a conductive path for current C. A voltage source, a conductive path for current, and a battery D. A conductive path for current, a battery, and a copper wire. Using the formula W = E^2/R, we can work out that the resistance of the 25W lamp is 484 ohms, and that of the 100W lamp is 121 ohms. 24. 100 J of heat is produced each second in a 4Ω resistor. These motors are used where the motor speed below the base speed is required as they cannot be operated above the base speed. Is thermistor a sensor. 14. MCQ for Electricity. Answer. Answer. Image = Signal +/- 2 x I.F. More Topics. Answer: b. (a) ohm (b) ampere (c) volt (d) faraday. b) ground. (a) ohm (b) ampere (c) volt (d) faraday. 2110 kHz C. 745 kHz D. 910 kHz. Multiple choice questions appear in both exam papers, and at both Tiers. Home >> Category >> Electronic Engineering (MCQ) questions & answers >> Linear Applications of Op-amp; 1) Due to presence of a capacitor in feedback path, the output of an integrator varies _____ a. The value is off by: A. d) All of the above . Rheostats are used to increase or decrease the volume of a radio. MCQ for Electricity. Q1. Students can solve NCERT Class 12 Physics Alternating Current MCQs Pdf with Answers to know their preparation level. (a) Electric potential (b) electric conductance (c) Electric current (d) none of these. A variable resistor consists of a length of resistance wire and an adjustable sliding contact. Q2. Answer: a. Post navigation. B. Q.26. A potentiometer is used to measure the voltage between two points of a D.C. circuit, which is found to be 1.2 V. This is also measured by a voltmeter, which is found to be 0.9 V. The resistance of the voltmeter is 60 kΩ. 14. a) Dynamic. B. The concept of V/f control of inverters driving induction motors … Answer. Recommended Post MCQ on Electromagnatism – 1 MCQ on Power electronics – 1 MCQ on Transmission and Distribution – 7 Basic electrical components – Resistor, Capacitor and Inductor MCQ on Battery – 2. List various applications of rheostat. A term used to express the amount of electric energy stored in electrostatic field is (a) ... MCQ or Objective. C. The rheostat can only increase the resistance in electric circuit D. The single key is used to switch on/off the electric circuit 13. 1655 kHz B. c) Regenerative. Q.1. Question 14. A voltmeter is a high resistance instrument and is connected in series circuit B. An ammeter is used to measure. About. Operational Amplifier Question and Answer. Ans: b. A rheostat is a variable resistor or an adjustable resistor.Its resistance can be varied as desired.It is a continuous resistance varying device used to change the magnitude of current in a circuit by changing the length of the resistance wire inserted into the circuit.The main use of a rheostat … The potential difference across the resistor will be: (a) 30 V (b) 10 V (c) 20 V (d) 25 V. Answer. B. The thermistor is a sensor: True; False; Correct answer: 1. ASWDC (App, Software & Website Development Center) Darshan Institute of Engineering & Technology (DIET) Physics MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. Gradually b. Instantaneously c. Intermittently d. All of the above. B. A load, a resistor, and a conductive path for current B. Answer. a) VBE. 6. Q18. The coil placed in the magnetic field and carrying the operating current is attached to the moving system. a. D. 10 percent . Free PDF Download of CBSE Physics Multiple Choice Questions for Class 12 with Answers Chapter 7 Alternating Current. If it is tuned to 1200 kHz, the image frequency will be. To save energy during braking—————–braking is used? D. Larger plate area and shorter distance between plates View Answer. d) Saturation and cutoff . b) The amplification factor. In a C-E configuration, an emitter resistor is used for. Electricity Question 15. Multiple choice questions are perhaps the easiest to complete - you simply put a cross in a box - however, the questions often have two answers that could, at first glance, be correct. c) VC. A rheostat differs from potentiometer in the respect that it (a) has lower wattage rating (b) has higher wattage rating (c) has large number of turns (d) offers large number of tapping . 7. The symbol for a variable resistor is given in the diagram below. Gibilisco: Trivia Questions On Resistors! Violet, orange and silver stripe from left to right, the resistance with tolerance is a) 740 ohms ± 5% b) 4700 ohms ± 10% c) 7400 ohms ± 1% d) 47,000 ohms ± 10% Electricalunits.com. Color coding technique is used to represent the values of resistors in the form of colored bands. 7.4 percent. Which of the following is the SI Unit of Electric Current? While 4 band resistors are most commonly available we’ll use them in next problems. Capacitance Multiple Choice Questions and Answers. Subject: Power Electronic Controlled Drives 1. Resistor Color Code; Voltage Divider; Current Divider; Please do a quick review of the listed topics before answering the following Multiple Choice Questions or Quizzes: Resistance and Resistive Circuits MCQ/Quiz. Explanation: No explanation is available for this question! These instruments are used either as ammeters or voltmeters and are suitable for d.c. work only. Figure 2: Circuit Symbol of Variable Resistor. (a) Ammeter (b) galvanometer (c) voltmeter (d) potentiometer. 20 Questions | By Froydwess | Last updated: Jun 22, ... A resistor is specified as having a value of 68 Ω, but is measured with an ohmmeter as 63 Ω. Part 1: List for questions and answers of Power Electronic Controlled Drives . Categories. Its S.I. A variable resistor used to control current is..... (A) Rheostat (B) Potentiometer (C) Both a and b (D) None 50. In a superheterodyne receiver, the IF is 455 kHz. (a) Ammeter (b) galvanometer (c) voltmeter (d) potentiometer. C. 5 percent. c) Collector bias. b) Ac signal bypass. b) Plugging. 49.03 miliohm; 108.3 milliohm; 20.4 miliohm; 53.1 miliohm; Answer. 1. 3. A. Transformer Power System Protective Relay Basic Electrical Interview Questions & Answers MCQ. A variable resistor (rheostat) can be used to control current in a circuit. 1. Resistance and Resistive Circuits MCQ/Quiz) Multiple Choice Questions / Quiz Resistance and Resistive circuits . For a carbon–composition resistor colour-coded with yellow. The input resistance between two points. Check the below NCERT MCQ Questions for Class 10 Science Chapter 12 Electricity with Answers Pdf free download. Figure 2 Rheostat load control. When a capacitor is used in place of a resistor in an op-amp network, its placement determines: Open or closed-loop gain; Integration or differentiation; Saturation or cutoff; Addition or subtraction Tags. 13. Multiple Choice Questions and Answers on Radio Receivers. c) The operating point. What is the rate of flow of electric charges called? 2. Solving the Electric Current and Its Effects Multiple Choice Questions of Class 7 Science Chapter 14 MCQ can be of extreme help as you will be aware of all the concepts. Without switching off the circuit, the resistance can be varied using a sliding contact. Electrical Engineering MCQ Question Papers: Campus Placement. This type of instrument is based on the principle that when a current carrying conductor is placed in a magnetic field, the mechanical force acts on the conductor. Rheostats are used … (a) Ammeter is used to measure electric current. Rheostat is a type of variable resistor which is used to control the flow of electric current by manually increasing or decreasing its resistance. Q19. These MCQ Questions on Electric Current and Its Effects Class 7 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Answer: (c) ohm . Which instrument is used for measuring electric potential? C. Larger plate area, longer distance between plates and higher applied voltage . The SI unit of resistance is (a) ohm m (b) ohm m 1 (c) ohm (d) (ohm)-1. Both speed and torque can be controlled by armature voltage control, armature rheostat control, and chopper control methods. Answer: (b) rheostat. Voltage dependent resistors are usually made from (a) charcoal (b) silicon carbide (c) nichrome (d) graphite . (b) (c) (i) Circuit diagram (ii) V = 1.6 V I = 0.6 A One ampere is defined as the current which will flow in a resistor of 1 Ω, when 1 volt potential difference is applied across its ends. Answer. Have a glance at the MCQ of Chapter 14 Science Class 7 … Combination of two or more cells is..... (A) Battery (B) Current (C) Power (D) I don’t know 51. Multiple choice questions are asked as questions, often starting with 'What is …' or 'Which of these …'. Operational Amplifier Trivia Questions and Answers PDF. What is the rate of flow of electric charges called? (a) Electric potential (b) electric conductance (c) Electric current (d) none of these. Home. Shorter play area and shorter distance between them . A. A. The thermistor is a sensor whose resistance varies with temperature and it can be used to sense temperature. 4, 5 or 6 bands are designed over the bodies of resistors. 7.9 percent. Answer. a) The power curve. Value of the unknown resistor is. ... resistor (b) rheostat (c) open switch (d) none of these. Electric potential is a: (a) scalar quantity (b) vector quantity (c) neither scalar nor vector (d) sometimes scalar and sometimes vector. True. Menu. Question 13. For example, assume that the load in Figure 2 has a resistance of 10 Ω and the supply voltage is 100 V. If the rheostat is set to 5 Ω, determine the load power, input power and efficiency. a) Stabilization. in any electrical circuit which of the statement given below is true : A. A voltmeter is used to find p.d. Which of the following is the SI Unit of Electric Current? units is ampere, it is connected in series. Suppose a resistor is rated at 3.3 K Ω, plus or minus 5 percent. Menu. The ends of a load line drawn on a family of curves determine. Answer Explanation ANSWER: Gradually. 31. A rheostat is also known as a. a voltage regulator b. an automatic resistor c. a current controller d. a variable resistor e. an exciter Answer: D Rotor rheostat control method of speed control is used for a) Squirrel-cage induction motors only b) Slip ring induction motors only c) Both (A) and (B) d) None of the above 3. 23. Ans: c. 25. The capacitance between two plates increases with . MCQ Quiz . Shorter plate area and higher applied voltage . From this we can work out that at 110V, the 25W bulb draws 22mA and the 100W bulb draws 91mA. Ohm’s law Quiz MCQs with Resistor Color Coding Technique. MCQ Multiple Choice Questions and Answers on Operational Amplifier. d) Higher gain . With a PNP circuit, the most positive voltage is probably . Explanation: A signal (image) can interfere with a superheterodyne receiver if fits the following equation. The term thermistor is a combination of thermal and resistor. Electric current was Prepared Based on Latest Exam Pattern shorter distance between and!, 5 or 6 bands are designed over the bodies of resistors on Operational Amplifier ) can be to! Resistor is used to control current in a C-E configuration, an emitter is... In any electrical circuit which of the following is the rate of flow electric! Positive voltage is probably a conductive path for current b Chapter 7 Alternating current MCQs PDF with to. Bodies of resistors in the diagram below sensor: True ; False ; Correct Answer:.... 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Length of resistance wire and an adjustable sliding contact a conductive path for current b and it can varied! Most positive voltage is probably Answers Chapter 7 Alternating current 4Ω resistor or....
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