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what are the examples of good insulators?
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Sep 19, 2017
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anonymous
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Sep 20, 2017
by
anonymous
Wood, plastic, rubber, glass, and air etc are the examples of good insulators.
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asked
Sep 19, 2017
by
anonymous
what are the examples of good conductor?
Last answer:
Copper Silver Platinum Aluminium
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4 days
ago
by
anonymous
A bird sitting on a high tension electric wire does not get electrocuted because (1) it has high resistance (2) the body is earthed (3) it does not form a closed path for the flow of current (4) its feet are good insulators
A bird sitting on a high tension electric wire does not get electrocuted because (1) it has high resistance (2) the body is earthed (3) it does not form a closed path for the flow of current (4) its feet are good insulators
Last answer:
it does not form a closed path for the flow of current
physics
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Jun 29, 2019
by
anonymous
Name two good conductors, two good insulators, and two semiconductors.
Name two good conductors, two good insulators, and two semiconductors.
Last answer:
In general all metals are good conductors, with silver the best and copper second.
name
two
good
conductors
insulators
and
semiconductors
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asked
Apr 5, 2018
by
anonymous
What type of insulators are used whenever the conductors are dead ended and there is a change in the...
What type of insulators are used whenever the conductors are dead ended and there is a change in the direction of transmission line? (A) Shackle type (B) Strain type (C) Pin type (D) Suspension type
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Aug 16, 2017
by
anonymous
what are the examples of poor conductor ?
what are the examples of poor conductor ?
Last answer:
carbon and salt water are the examples of poor conductors.
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Mar 10, 2018
by
anonymous
What are examples of telecommunication devices?
What are examples of telecommunication devices?
examples
telecommunication
devices
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asked
Mar 10, 2018
by
anonymous
What are some examples of a closed loop system?
What are some examples of a closed loop system?
Last answer:
C.L s/m. EX. Air conditioner (AC), rocket launcher, radar system, voltage stabilizer etc.
examples
closed
loop
system
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asked
May 25, 2020
by
anonymous
What happens insulators when high voltage passes through transmission lines whether it breaks or lose it's insulating property?
What happens insulators when high voltage passes through transmission lines whether it breaks or lose it's insulating property?
Last answer:
I think it will breaks when it crosses breakdown voltage .
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asked
Apr 29, 2018
by
anonymous
The voltages across various discs of suspension insulators having identical discs are different due to:
The voltages across various discs of suspension insulators having identical discs are different due to: (A) Surface leakage currents (B) Series capacitance of lines (C) Shunt capacitance to ground (D) Series and shunt capacitances
Last answer:
The voltages across various discs of suspension insulators having identical discs are different due to: Shunt capacitance to ground
voltages
suspension
insulators
discs
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4 days
ago
by
anonymous
Superconductors are those elements (1) Whose conductivity is intermediate between metals and insulators (2) Whose resistance falls almost to zero at very low temperatures (3) which turn into insulators at very low temperatures (4) which conduct electricity only at super-high temperatures
Superconductors are those elements (1) Whose conductivity is intermediate between metals and insulators (2) Whose resistance falls almost to zero at very low temperatures (3) which turn into insulators at very low temperatures (4) which conduct electricity only at super-high temperatures
Last answer:
Whose resistance falls almost to zero at very low temperatures
physics
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asked
Sep 7, 2018
by
anonymous
What is renewable source of energy? State two examples for the same.
What is renewable source of energy? State two examples for the same.
Last answer:
Renewable (Primary) Energy sources: It is defined as the sources that can be used again and again for the generation of electrical energy are called renewable. Following are the some list ... ) and carbon dioxide 6. Geothermal Energy Geothermal Electricity Production 7. Fuel Cells
renewable
source
energy
examples
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asked
Aug 3, 2020
by
anonymous
What are some good business ideas ?
What are some good business ideas ?
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asked
Sep 9, 2018
by
anonymous
What is need of level measurement? Give classification of level measurement methods with two examples of each.
What is need of level measurement? Give classification of level measurement methods with two examples of each.
Last answer:
In almost all industries, vast quantities of liquid such as water solvents, chemicals etc. are used in number of processes. It is widely employed to monitor as well as measure quantitatively the ... a) Capacitance level indicator b) Radiation level detector c) Ultrasonic level gauge 3. Radar type
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Sep 4, 2018
by
anonymous
What is diagonal communication? Explain with two examples.
What is diagonal communication? Explain with two examples.
Last answer:
Ans: A person working at higher level of authority in his organization may be required to correspond with a person working at lower level or vice versa; this is called as diagonal ... International. 2) In a seminar, Production Manager communicates with the workers, supervisors and General Manager
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asked
May 13, 2018
by
anonymous
____ are the examples of pointing devices.
____ are the examples of pointing devices. a) Electronic Mouse b) Pointing Stick c)Track ball d) All of the above
Last answer:
____ are the examples of pointing devices. a) Electronic Mouse b) Pointing Stick c)Track ball d) All of the above
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asked
Jan 17
by
anonymous
Bread and butter, car and petrol are examples of goods which have (1) composite demand (2) joint demand (3) derived demand (4) autonomous demand
Bread and butter, car and petrol are examples of goods which have (1) composite demand (2) joint demand (3) derived demand (4) autonomous demand
Last answer:
derived demand
economics
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asked
Aug 25, 2019
by
anonymous
Compare pin type and suspension insulators on given points: (i) Position of insulator on cross arm. (ii) Position of conductor on insulator. (iii) Reaction on cross arm. (iv) Possibility of flash over due to large birds (v) Maintenance/Replacement cost (vi) Maximum voltage level (vii) Effect on height of supporting structure. (viii) Life
Compare pin type and suspension insulators on given points: (i) Position of insulator on cross arm. (ii) Position of conductor on insulator. (iii) Reaction on cross arm. (iv) Possibility of flash over due to large birds (v) Maintenance/Replacement cost (vi) Maximum voltage level (vii) Effect on height of supporting structure. (viii) Life
Last answer:
S.No Points Pin Type insulator Suspension or Disc Type insulator 1 Position of insulator on cross arm It is fixed on top of cross arm by using galvanized steel pin. So it is ... so to maintain minimum ground clearance height of pole increase. 8 Life Less More
suspension
insulators
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asked
Jul 1, 2019
by
anonymous
Which have more free electrons: conductors or insulators?
Which have more free electrons: conductors or insulators?
Last answer:
Conductors have many free electrons whereas insulators have very few or none at all.
which
have
more
free
electrons
conductors
or
insulators
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asked
3 days
ago
by
anonymous
On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because : (1) metals have higher thermal capacity than plastics (2) plastics have a lower density than metals (3) metals are good conductors of heat (4) plastics have a higher thermal conductivity than metals
On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because : (1) metals have higher thermal capacity than plastics (2) plastics have a lower density than metals (3) metals are good conductors of heat (4) plastics have a higher thermal conductivity than metals
Last answer:
metals are good conductors of heat
physics
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3 days
ago
by
anonymous
To prevent damage from lightning, lightning conductors are used on tall structures. The lightning conductor (1) should be made of a good conductor but can be of any shape (2) should be in the form of a vertical rod (3) can be of any shape (4) should be made of a good conductor like copper with sharp-pointed edges
To prevent damage from lightning, lightning conductors are used on tall structures. The lightning conductor (1) should be made of a good conductor but can be of any shape (2) should be in the form of a vertical rod (3) can be of any shape (4) should be made of a good conductor like copper with sharp-pointed edges
Last answer:
should be made of a good conductor like copper with sharp-pointed edges
physics
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Jan 9
by
anonymous
In a basket of eggs, 20% of them are rotten and 68 are in good condition. Find the total number of eggs in the basket. a) 85 b) 60 c) 75 d) 40 e) 98
In a basket of eggs, 20% of them are rotten and 68 are in good condition. Find the total number of eggs in the basket. a) 85 b) 60 c) 75 d) 40 e) 98
Last answer:
Answer: A Let the total number of eggs in the basket be x 20 % of the eggs are rotten, and eggs in good condition are 68 Therefore, according to the question, 80% of x = 68 80/100 × x = 68 x = (68 × 100)/80 x = 6800 / 80 x = 85 Therefore, total number of eggs in the basket is 85.
percentage
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3 days
ago
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anonymous
Outside of cooking utensils are generally left black from below because (1) it is difficult to clean daily. (2) black surface is a good conductor of heat. (3) black surface is a poor conductor of heat. (4) black surface is a good absorber of heat.
Outside of cooking utensils are generally left black from below because (1) it is difficult to clean daily. (2) black surface is a good conductor of heat. (3) black surface is a poor conductor of heat. (4) black surface is a good absorber of heat.
Last answer:
black surface is a good absorber of heat.
physics
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4 days
ago
by
anonymous
Mud houses are cooler in summers and warmer in winters as compared to brick houses because (1) mud is a good conductor (2) mud is a bad conductor (3) mud is a poor insulator (4) evaporation of water causes cooling in summers and sunlight coming through holes causes warming in winters
Mud houses are cooler in summers and warmer in winters as compared to brick houses because (1) mud is a good conductor (2) mud is a bad conductor (3) mud is a poor insulator (4) evaporation of water causes cooling in summers and sunlight coming through holes causes warming in winters
Last answer:
mud is a bad conductor
physics
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2 days
ago
by
anonymous
Metal are good conductors, because (1) they contain free electrons (2) the molecules in them are very close to each other (3) the molecules in them collide very freely (4) they contain reflecting surface
Metal are good conductors, because (1) they contain free electrons (2) the molecules in them are very close to each other (3) the molecules in them collide very freely (4) they contain reflecting surface
Last answer:
they contain free electrons
chemistry
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1
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asked
Aug 9, 2019
by
anonymous
Explain the scope of Mechatronics in Industry. Give any four examples.
Explain the scope of Mechatronics in Industry. Give any four examples.
Last answer:
There is no limit for scope of Mechatronics in industry. Due to mechatronics speed, quality, flexibility, sophistication and quantity of product has improved drastically. Marketing of product has also become simple. ... . Examples :- MRI., CT-SCAN, Endoscopy Robotics Unmanned Air vehicle.
scope
mechatronics
industry
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1
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asked
Sep 4, 2018
by
anonymous
State the temperature with standing capacity of following class-insulating material class Y, class A, class B, class E. Also state two examples for each.
State the temperature with standing capacity of following class-insulating material class Y, class A, class B, class E. Also state two examples for each.
Last answer:
S.No Class of Insulating material Temperature withstanding capacity 0C Examples 1 Class Y' 900C Cotton, Silk paper and similar organic materials neither impregnated nor ... E' 1200C Cotton fabric, synthetic resin enamels. Paper laminates and Powder plastics
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1
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asked
Jul 16, 2020
by
anonymous
Are rabbits a good pet?
Are rabbits a good pet?
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asked
Sep 12, 2018
by
anonymous
State two examples of active transducer.
State two examples of active transducer.
Last answer:
Examples of active transducer: 1. Thermocouple 2. photovoltaic cells (solar cells) 3. Piezoelectric crystals. 4. Thermoelectric 5. Magnetostrictive 6. Electrokinetic
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asked
Sep 12, 2018
by
anonymous
State two examples of passive transducer.
State two examples of passive transducer.
Last answer:
Examples of passive transducer: 1. LDR 2. Thermistor 3. Strain Gauge 4. Resistive transducers. 5. Inductive transducers. 6. Photoconductive 7. Capacitive transducers. 8. Magnetoresistive 9. Thermoresistive 10. Electroresistive 11. RTD
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1
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asked
Sep 7, 2018
by
anonymous
Give examples of different types of fuels. Also state any two advantages of liquid fuels over solid fuels.
Give examples of different types of fuels. Also state any two advantages of liquid fuels over solid fuels.
Last answer:
Examples of different types of fuels:- 1. Indian Coal : It contain 30 to 40 % ash but sulphur content is less than 1%.. 2. Imported coal: It contents low ash about 10% but sulphur ... can be controlled to match the load requirements. 13. Rapid and efficient starting of the boilers from cold.
fuels
advantages
liquid
solid
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58
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1
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asked
Sep 5, 2018
by
anonymous
Give two examples of trivalent and pentavalent impurities.
Give two examples of trivalent and pentavalent impurities.
Last answer:
Trivalent Impurities: 1) Gallium (Ga) 2) Indium (In) 3) Aluminium (Al) 4) Boron (B) Pentavalent Impurities: 1) Phosphorus (P) 2) Antimony (Sb) 3) Arsenic (As) 4) Bismuth (Bi)
trivalent
pentavalent
impurities
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40
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1
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asked
Sep 4, 2018
by
anonymous
List four examples of insulating material and explain any two.
List four examples of insulating material and explain any two.
Last answer:
Examples of insulating materials: i) Solid: Ceramic, Porcelain, Mica, Glass, Rubber, Resinous, Fibers ii) Liquid: Synthetic, Mineral etc. iii) Gaseous: Hydrogen, Air, ... and low hygroscopicity. Uses: Insulation in electric field, transformer stampings, armature, pole stampings
examples
insulating
material
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1
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asked
Jun 10, 2020
by
anonymous
Describe with reasons the failure of porcelain insulators.
Describe with reasons the failure of porcelain insulators.
Last answer:
The reasons the failure of porcelain insulators : - 1. Manufacturing Defect:- Insulator may fail due to manufacturing defect. So, it must be tested before use. 2. Uneven Expansion and Contraction ... use of insulator for a long period, its dielectric strength reduces. So, it may fail insulator.
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11
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1
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asked
May 24, 2020
by
anonymous
Classify the solids into conductors, semiconductors and insulators on the basis of band theory of solids.
Classify the solids into conductors, semiconductors and insulators on the basis of band theory of solids.
Last answer:
In conductors there is no energy gap between valance band and conduction band, they are overlapped on each other. So electrons can jump from valance band to conduction band easily and material ... band when some amount of energy is supplied to it. Therefore insulators cannot conduct the current.
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1
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asked
May 22, 2020
by
anonymous
List the properties of line insulators in brief
List the properties of line insulators in brief
Last answer:
Following are the properties of line insulators: A) Electrical Properties of insulating material:- 1. It should have high resistance. 2. It should have high breakdown voltage. 3. It should have high ... of insulating material:- 1. It should have longer life. 2. It should have low cost
properties
line
insulators
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23
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1
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asked
Mar 27, 2018
by
anonymous
In a string of suspension insulators, the voltage distribution across...
In a string of suspension insulators, the voltage distribution across the different units of a string could be made uniform by the use of a grading ring, because it?
Last answer:
In a string of suspension insulators, the voltage distribution across the different units of a string could be made uniform by the use of a grading ring, because it forms capacitances which help to cancel the charging current from link pins.
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125
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1
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asked
Jun 29, 2019
by
anonymous
List at least two examples that show how static electricity can be generated.
List at least two examples that show how static electricity can be generated.
Last answer:
Examples of how static electricity can be generated include combing your hair, walking across a carpeted room, or sliding two pieces of plastic across each other.
list
at
least
two
examples
that
show
how
static
electricity
can
be
generated
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87
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1
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asked
May 22, 2019
by
anonymous
Energy stored in capacitor examples
Energy stored in capacitor examples
Last answer:
Energy stored in capacitor examples
energy
stored
in
capacitor
examples
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93
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1
answer
asked
Sep 8, 2018
by
anonymous
Define transducer. Give two examples.
Define transducer. Give two examples.
Last answer:
Transducer - It converts one form of signal into another form. A transducer is a device that is used to convert a physical quantity into its corresponding electrical signal. Classification - 1. Active transducer 2. Passive transducer
define
transducer
examples
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5
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asked
2 days
ago
by
anonymous
This group of alumino-silicate minerals is widely used in making electrical insulators (1) Bauxite (2) Chromite (3) Manganese (4) Mica
This group of alumino-silicate minerals is widely used in making electrical insulators (1) Bauxite (2) Chromite (3) Manganese (4) Mica
Last answer:
Mica
chemistry
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1
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asked
Jun 10, 2020
by
anonymous
State two insulators of following types along with their areas of application: (i) Class A (ii) Class E (iii) Class H
State two insulators of following types along with their areas of application: (i) Class A (ii) Class E (iii) Class H
Last answer:
Temperature class and withstand temperature ranges for them:
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Oct 23, 2020
by
anonymous
What well-known person does the most good for the world?
What well-known person does the most good for the world?
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Oct 23, 2020
by
anonymous
What has taken you the longest to get good or decent at?
What has taken you the longest to get good or decent at?
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22
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asked
Jul 16, 2020
by
anonymous
What is Tulsi good for?
What is Tulsi good for?
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13
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0
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asked
Mar 10, 2018
by
anonymous
What is good power quality?
What is good power quality?
good
power
quality
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53
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asked
Mar 31, 2018
by
anonymous
A Two-Port Network is said to be symmetrical when the following equalities hold good
A Two-Port Network is said to be symmetrical when the following equalities hold good (A) Z11 = Z22 and Z12 = Z21 (B) Z11 = Z22 (C) Y12 = Y21 (D) Y11 = Y22 and Y12 = Y21
Last answer:
A Two-Port Network is said to be symmetrical when the following equalities hold good Z11 = Z22
two-port
network
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asked
May 13, 2018
by
anonymous
Distribution transformers have good all day efficiency due to
Distribution transformers have good all day efficiency due to (A) low copper loss (B) low iron loss (C) low copper and iron loss (D) None of these
Last answer:
Distribution transformers have good all day efficiency due to low iron loss
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50
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asked
Apr 11, 2018
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anonymous
A diesel plant has good efficiency at
A diesel plant has good efficiency at (1) Plant load (2) Half load (3) Full load (4) None of the above
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63
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asked
Mar 25, 2018
by
anonymous
A material for good magnetic memory should have?
A material for good magnetic memory should have?
Last answer:
A material for good magnetic memory should have high retentivity.
material
good
magnetic
memory
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101
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1
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asked
Jan 7
by
anonymous
Define fuel. Give the classification of fuel based on their occurrence with two examples of each type.
Define fuel. Give the classification of fuel based on their occurrence with two examples of each type.
Last answer:
Fuel: A fuel can be defined as any combustible substance which during combustion gives large amount of heat energy. Classification of Fuel : I) Primary or Natural Physical State i) Solid - e.g wood ... diesel oil, lubricating oil iii)Gaseous- e.g LPG, water gas ,producer gas ,coal gas, biogas
applied
chemistry
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