Description : A sensor which changes light intensity into electric voltage. (a) LDR (b) thermistor (c) photodiode (d) photovoltaic
Last Answer : (a) LDR
Description : Devices that transforms electrical signals into physical movements A. Sensors B. Actuators C. Switches D. Display
Last Answer : B. Actuators
Description : Which one of the following physical quantities is independent of relativistic speed? a) Mass b) Length c) Time d) Charge
Last Answer : d) Charge
Description : Thermocouples convert a. heat energy into electrical energy b. heat energy into light energy c. heat energy into mechanical energy d. mechanical energy into heat energy
Last Answer : d. mechanical energy into heat energy
Description : Protective relays are devices that detect abnormal conditions in electrical circuits by measuring (a) current during abnormal condition (b) voltage during abnormal condition (c) constantly the electrical quantities which differ during normal and abnormal conditions (d) none of the above
Last Answer : (c) constantly the electrical quantities which differ during normal and abnormal conditions
Description : IOT devices are various types, for instance______________. A. Wearable sensors. B. Smart watches. C. LED lights. D. All of the above
Last Answer : D. All of the above
Description : Why is it cheaper to transmit electrical energy at high voltage?
Last Answer : Because of the electrical energy was step upped by transformers the transformer have high efficiency than the electric energy is cheaper
Description : Which one of the following quantities is conserved in pair production? a) Energy b) Charge c) Linear momentum d) All
Last Answer : d) All
Description : Which of the following quantities change when a proton moves at right angles to a magnetic field? a) Momentum b) Energy c) Speed d) All of these
Last Answer : a) Momentum
Description : On an engine throttle control system, the auxiliary control circuits are provided with devices to prevent excessive overtravel of the pilot valve by the synchronous motor. These devices are called _________________. A. overlap sensors B. limit switches C. overtravel relays D. proximity switches
Last Answer : Answer: B
Description : A galvanometer of 65 Ω resistance gives full scale deflection with 4 mA current. In order to convert it into ammeter, the range of 10 A is connected with it, the shunt resistance should be a) 0.1 Ω b) 0.2 Ω c) 0.06 Ω d) 0.03 Ω
Last Answer : d) 0.03 Ω
Description : A circuit which develops voltage across the horizontal deflection plates is known as a) Time base generator b) Electron gun c) Thermionic diode d) Zener diode
Last Answer : a) Time base generator
Description : The fractional change in resistance per kelvin is known as, a. temperature coefficient of resistance b. coefficient of Voltage of charge c. thermal expansion d. all of above
Last Answer : a. temperature coefficient of resistance
Description : Alternating current generator converts.......... energy into electrical energy? a. mechanical energy b. chemical energy c. solar energy d. potential energy
Last Answer : a. mechanical energy
Description : Heat energy is converted into electrical energy a. solar cells b. thermocouples c. electric generators d. none
Last Answer : b. thermocouples
Description : Briefly explain how an electrical generator converts mechanical energy into electrical energy.
Last Answer : Working principle of DC generator: * Working principle of DC generator is the principle of dynamically induced emf or electromagnetic induction. * According to this principle, when flux is cut by a conductor, an ... , the flux is cut by the armature winding and an emf is dynamically induced in it.
Description : In fuel cell the __________ energy is converted into electrical energy. (A) Mechanical (B) Chemical (C) Heat (D) Sound
Last Answer : In fuel cell the Chemical energy is converted into electrical energy.
Description : When an alternating current passes through an ohmic resistance the electrical power converted into heat is?
Last Answer : When an alternating current passes through an ohmic resistance the electrical power converted into heat is true power.
Description : Define measurement and state the significance of electrical measurement system.
Last Answer : Measurement: Measurement is essentially a process in which magnitude of a quantity is determined in comparison with another similar quantity with significant units. OR The measurement of a given ... x) The measurement conforms the validity of hypothesis and also adds to its understanding.
Description : Explain significance and purpose of electrical measurement system.
Last Answer : ➢ Significance of Electrical Measurement System 1. The measurement is required for measurement of all physical quantities for e.g speed, velocity, temperature, pressure etc. 2. All electrical ... 4. These standards and references may changes time to time, area to area person to person
Description : __________ are devices that convert electrical energy into light. A. Emissive Displays B. Non-Emissive Displays C. Both (A) and (B) D. None of the Above
Last Answer : A. Emissive Displays
Description : Which is the most important building block of electronic devices? (a) Diode (b) p-n junction (c) transistor (d) rectifier
Last Answer : b) p-n junction
Description : The electronic circuits which implement the various logic operations are called ________ (a) Logic gates (b) Boolean algebra (c) amplifier gain (d) logic functions
Last Answer : a) Logic gates
Description : Three resistors of resistance R are connected in various ways, which of the following cannot be obtained? a. 3R ohm b. 2R/4 ohm c. R/3 ohm d. 2R/3 ohm
Last Answer : b. 2R/4 ohm
Description : The value of ∈r for various dielectrics is always: (a) Larger than unity (b) Less than unity (c) Equal to unity (d) None of above
Last Answer : (a) Larger than unity
Description : Can you help me solve my electrical mystery?
Last Answer : Any signs of animal life? They can get in the walls and chew on the wires. Or is it the entire area served by that breaker? The breaker could be bad. It happens with anything mechanical.
Description : Air conditioning will not turn on, is it electrical?
Last Answer : Pull the Thermostat off the wall and see if it is connected correctly to the AC switch. There should be no dangling wires, and the post labeled for the AC should have an attached wire.
Description : Have you ever taken a shower or bath during an electrical storm?
Last Answer : I’ve heard this rumor, and I too question it’s validity. I mean, if electricity can’t travel up a stream of urine (See mythbusters) I’m pretty sure it couldn’t travel through a shower stream. Perhaps through the drain? In either case, I’ve taken a shower in a storm before, and.. well, you see?
Description : Electrical breaker box is buzzing-why??
Last Answer : No! Do not upgrade the breaker. The wire must also be upgraded if you do. Try plugging it in a different room. Is the problem still there?
Last Answer : Wire Through In load ( e.g. fan , lamp ) Etc. ) electric Power Supply To do Ordinary To the system Electric Waring Says. General In a sense Load Electric Power Supply To do For Of wires Ordinary In the system Being Electric Waring.
Description : What are the safety precautions when working on electrical equipments?
Last Answer : Switch off power, wear proper protective clothing, safety shoes, Notice board : Do not switch on - Men at work, stand on rubber mat, remove metal rings, watch bracelets, use proper insulated tools, ... work permit. In case of electrical shock, give proper first aid, check heart beat and pulse.
Description : What limits the electrical load?
Last Answer : The available power is fixed and the voltage is fixed, so the setting of the breaker or fuse is the normal current of the load. If the load exceeds the rated current, then the breaker or fuse will operate and limit the load.
Description : Electrical energy is converted to heat at the rate of a. IRt b. I 2R c. I 2Rt d. VIt
Last Answer : b. I 2R
Description : All electrical appliances are connected in parallel to each other between the main line and neutral wire to get a. same current b. same current and potential difference c. different current but same potential difference d. different current and potential differences
Last Answer : c. different current but same potential difference
Description : An immersion heater of 400 watts kept on for 5 hours will consume electrical power of a. 2KWh b. 20KWh c. 6KWh d. 12KWh
Last Answer : a. 2KWh
Description : What are the test and measuring instrument required in an Electrical depots?
Last Answer : Ans. Following are the test and measuring instruments required in an Electrical depots. a. Test lamp b. Line Tester c. Continuity tester d. Volt meter e. Ammeter f. Earth megger g. Megger h. Lux meter i. Power analyzer j. Infrared thermometer
Description : How to replace the electrical wiring in the apartment?
Last Answer : How to replace the electrical wiring in the apartment? In most cases, when renovating an apartment, a complete replacement of the electrical wiring is required, especially if the house was built in ... Upon completion of the finishing, the new electrical wiring in your apartment is ready for use.
Description : Explain the suitability of aluminium as an electrical conductor with respect to its mechanical and electrical properties.
Last Answer : Following are requirements of conductor:- i) High conductivity : Material should have high conductivity, So that * cross section of conductor (size) reduces, * Copper losses reduces, * So Efficiency ... . Boiling point is 1820°C 9. Specific gravity is 2.7 10. High resistance to corrosion.
Description : State different types of electrical signal and draw all types of waveforms.
Last Answer : Types of electrical signals 1) Sine wave 2) Triangular wave 3) Square wave Waveforms
Description : Electrical Measuring Instruments
Last Answer : Electrical Measuring Instruments
Description : GATE 2020 syllabus electrical engineering
Last Answer : EE: Electrical Engineering Section 1: Engineering Mathematics Linear Algebra: Matrix Algebra, Systems of linear equations, Eigenvalues, Eigenvectors. Calculus: Mean value theorems, Theorems of ... to dc converters, Single phase and three phase inverters, Sinusoidal pulse width modulation.
Description : Electrical specifications with values for washing machine.
Last Answer : 1. Type: Top loading / Front loading type 2. Capacity range: 6kg to 15kg 3. Motor Used: Induction motor 4. Input voltage: 100V- 240V 5. Power: in 1200W / Output power 100–400W{can go upto 1000W) 6. Efficiency: Max efficiency 31% 7. Wattage: 2.100-2.400 W 8. Current: 13A 9. Frequency: 50hz
Description : electrical specifications of microwave oven.
Last Answer : Supply voltage: 220 volts,50 Hz. Single phase A.C. Power consumption: 1300 W approx.(power consumption vary as manufacturer from500W to 1500W) Microwave power: 700 w-850 W Microwave frequency: 2450 ... ) Timer: 60 min. - 90 min(timer can also varied) Control: Soft/one touch control
Description : Name safety tools used in industry for electrical wiring.
Last Answer : Safety tools used in industry for electrical wiring : 1) Hand gloves 2) Goggles 3) Rubber mats 4) Fire extinguishers 5) Danger notice plates 6) Search lights 7) Safety shoes or Gumboots 8) Ear plugs ... belts 13) Safety mask 14) Fire buckets 15) First aid box 16) Insulating stick or discharge rod
Description : Write example of each type (i) Primary transducer (ii) Active transducer (iii) Electrical transducer (iv) Digital transducer
Last Answer : (i) Active transducer:-Thermocouple, piezoelectric, photovoltaic cell (ii) Primary transducer:- Bourdon tube, bellows, (iii) Electrical transducer.:- LVDT,RVDT, Hall effect, strain gauge, ... , optical pyrometer, radiation pyrometer (iv) Digital transducer:- Linear Encoder, digital taco generator
Description : Define the term electrical noise. List types of noises.
Last Answer : Electrical Noise:- It can be defined as undesirable electrical signals, which distort or interfere with an original (or desired) signal. Types of noises:-
Description : What are the main electrical equipment used in HPS ? State the function of each parts of it in brief.
Last Answer : Following Main Electrical Equipment used in HPS & their function: 1. Alternator 2. Exciter 3. Transformer 4. Switchgear Function : 1) Alternator:- Alternator is coupled to ... part from the healthy section. It contains circuit breaker, relays, switches and other control devices.
Description : State the importance of electrical power in day to day life.
Last Answer : Importance of electrical power in day to day life: 1. Electrical energy is the basic necessity for domestic (residency), commercial, industrial, agriculture, consumers , transport (Electric ... agriculture products. iv) Running motors, furnaces of various kinds in industry, running locomotives
Description : Why earthing is essential in electrical installation ? Explain any one type of earthing.
Last Answer : Following reasons earthing is essential in electrical installation : 1. To provide an alternative path for the leakage current to flow towards earth. 2. To save human life from danger of electrical shock ... G.I. pipe of size 19mm and funnel for pouring the water in earth pit when required.
Description : Write short notes on fire extinguishing methods adopted in electrical engineering.
Last Answer : Stand 6 to 8 feet away from the fire and follow the four-step PASS procedure. If the fire does not begin to go out immediately, leave the area at once. Always be sure ... fire causing the particles to expand chemically inhibiting combustion and expelling the oxygen thereby smothering the flames.