High tension cables are generally used up to (a) 11kV (b) 33kV (c) 66 kV (d) 132 kV

High tension cables are generally used up to (a) 11kV (b) 33kV (c) 66 kV (d) 132 kV
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(a) 11kV
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Related questions

Pressure cables are generally not used beyond (a) 11 kV (b) 33 kV (c) 66 kV (d) 132 kV

Description : Pressure cables are generally not used beyond (a) 11 kV (b) 33 kV (c) 66 kV (d) 132 kV

Last Answer : (c) 66 kV

cables are used for 132 kV lines. (a) High tension (b) Super tension (c) Extra high tension (d) Extra super voltage

Description : cables are used for 132 kV lines. (a) High tension (b) Super tension (c) Extra high tension (d) Extra super voltage

Last Answer : (d) Extra super voltage

Cables, generally used beyond 66 kV are (a) oil filled (b) S.L. type (c) belted (d) armoured

Description : Cables, generally used beyond 66 kV are (a) oil filled (b) S.L. type (c) belted (d) armoured

Last Answer : (a) oil filled

Solid type cables are considered unreliable beyond 66 kV because (a) insulation may melt due to higher temperature (b) skin effect dominates on the conductor (c) of corona loss between conductor and sheath material (d) there is a danger of breakdown of insulation due to the presence of voids

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Last Answer : (d) there is a danger of breakdown of insulation due to the presence of voids

The operating voltage of extra high tension cables is upto (a) 6.6 kV (b) 11 kV (c) 33 kV (d) 66 kV (e) 132 kV

Description : The operating voltage of extra high tension cables is upto (a) 6.6 kV (b) 11 kV (c) 33 kV (d) 66 kV (e) 132 kV

Last Answer : (d) 66 kV

Low tension cables are generally used up to (a) 200 V (b) 500 V (c) 700 V (d) 1000 V

Description : Low tension cables are generally used up to (a) 200 V (b) 500 V (c) 700 V (d) 1000 V

Last Answer : (d) 1000 V

Why 1.1 kV grade cables used for 415V?

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Last Answer : To take care of the both earthed / unearthed systems.  

What are the types of cables used in 6.6 kV and 415 V system voltages?

Description : What are the types of cables used in 6.6 kV and 415 V system voltages? 

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Cables for 220 kV lines are invariably (a) mica insulated (b) paper insulated (c) compressed oil or compressed gas insulated (d) rubber insulated (e) none of the above

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Last Answer : (c) compressed oil or compressed gas insulated

Why Generation Voltage in Power Plant is Low (11kV to 33kV) ?

Description : Why Generation Voltage in Power Plant is Low (11kV to 33kV) ?

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Why transmission line 11Kv OR 33KV, 66Kv not in 10kv 20kv?

Description : Why transmission line 11Kv OR 33KV, 66Kv not in 10kv 20kv?

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Why we are use 11KV / 22KV / 33KV / 66KV / 110KV / 230KV / 440KV this type of ratio. Why can’t we use other voltage ratio like 54KV / 99KV etc.

Description : Why we are use 11KV / 22KV / 33KV / 66KV / 110KV / 230KV / 440KV this type of ratio. Why can’t we use other voltage ratio like 54KV / 99KV etc.

Last Answer : 1. When an alternator generates voltage, its rms value is given by 4.4*f*$*t, where $ is value of total flux per pole. So we can see all the voltages are made inevitably multiple of this value (1.1, ... and which comes out to be 1.11 so we cant have a combination of other then a multiple of 1.11.

Why electricity in India is in the multiples of 11 like 11kv, 22kv, 33kv ?

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Last Answer : A:Transformer Induced voltage equation contains 4.44 factor. E -Induced emf per phase T -number of turns f -frequency Φ -maximum flux per pole From the equation we see that E is proportional to 4.4 and it is in turn multiple of 11.So always transmission voltage is multiple of 11

Why is transmission line 11kV, 33kV 66kV Not Is 10kV, 20kV, 30kV ?

Description : Why is transmission line 11kV, 33kV 66kV Not Is 10kV, 20kV, 30kV ?

Last Answer : 10kv plus to compensate losses in olden days 1kv were added and transmitted. Since all equipment used for transmission have a multiple of 11 from olden days, still that is being followed even though the losses are ... voltages, multiples of 11 is eazy for winding ratios.. i.e. 11kv to 33kv is 1:3.

The advantage of cables over overhead transmission lines is (a) easy maintenance (b) low cost (c) can be used in congested areas (d) can be used in high voltage circuits

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Is a cable is to be designed for use on 1000 kV, which insulation would you prefer ? (a) Polyvinyle chloride (b) Vulcanised rubber (c) Impregnated paper (d) Compressed SFe gas (e) none of the above

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If a cable of homogeneous insulation has a maximum stress of 10 kV/mm, then the dielectric strength of insulation should be (a) 5 kV/mm (b) 10 kV/mm (a) 15 kV/mm (d) 30 kV/mm

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Last Answer : (b) 10 kV/mm

Dielectric strength of rubber is around (a) 5 kV/mm (b) 15 kV/mm (c) 30 kV/mm (d) 200 kV/mm

Description : Dielectric strength of rubber is around (a) 5 kV/mm (b) 15 kV/mm (c) 30 kV/mm (d) 200 kV/mm

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Rubber is most commonly used insulation in cables. (a) Yes (b) No

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Last Answer : (a) Yes

In congested areas where excavation is expensive and inconvenient 'draw in system' of laying of underground cables is often adopted. (a) Yes (b) No

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Last Answer : (a) Yes

It is difficult to maintain oil filled cables. (a) Yes (b) No

Description : It is difficult to maintain oil filled cables. (a) Yes (b) No

Last Answer : (a) Yes

The advantage of oil filled cables is (a) more perfect impregnation (b) smaller overall size (c) no ionisation, oxidation and formation of voids (d) all of the above

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Last Answer : (d) all of the above

Copper as conductor for cables is used as (a) annealed (b) hardened and tempered (c) hard drawn (d) alloy with chromium

Description : Copper as conductor for cables is used as (a) annealed (b) hardened and tempered (c) hard drawn (d) alloy with chromium

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The thickness of metallic shielding on cables is usually (a) 0.04 mm (b) 0.2 to 0.4 mm (e) 3 to 5 mm (d) 40 to 60 mm

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Underground cables are laid at sufficient depth (a) to minimise temperature stresses (b) to avoid being unearthed easily due to removal of soil (c) to minimise the effect of shocks and vibrations due to gassing vehicles, etc. (d) for all of the above reasons

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Capacitance grading of cable implies (a) use of dielectrics of different permeabilities (b) grading according to capacitance of cables per km length (c) cables using single dielectric in different concentrations (d) capacitance required to be introduced at different lengths to counter the effect of inductance (e) none of the above

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The electrostatic stress in underground cables is (a) same at the conductor and the sheath (b) minimum at the conductor and maximum at the sheath (c) maximum at the conductor and minimum at the sheath (d) zero at the conductor as well as on the sheath (e) none of the above

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Last Answer : (c) provide proper stress distribution

In the cables, sheaths are used to (a) prevent the moisture from entering the cable (b) provide enough strength (e) provide proper insulation (d) none of the above

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Last Answer : (a) prevent the moisture from entering the cable

In cables the charging current (a) lags the voltage by 90° (b) leads the voltage by 90° (c) lags the voltage by 180° (d) leads the voltage by 180°

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In capacitance grading of cables we use a ______ dielectric. (a) composite (b) porous (c) homogeneous (d) hygroscopic

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Conduit pipes are normally used to protect _____ cables. (a) unsheathed cables (b) armoured (c) PVC sheathed cables (d) all of the above

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The current carrying capacity of cables in D.C. is more that in A.C. mainly due to (a) absence of harmonics (b) non-existence of any stability limit (c) smaller dielectric loss (d) absence of ripples (e) none of the above

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The insulating material for cables should (a) be acid proof (b) be non-inflammable (c) be non-hygroscopic (d) have all above properties

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The thickness of the layer of insulation on the conductor, in cables, depends upon (a) Reactive power (b) Power factor (c) Voltage (d) Current carrying capacity

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Which of the following insulation is used in cables? (a) Varnished cambric (b) Rubber (c) Paper (d) Any of the above

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Description : How to Hide Speaker Cables

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Draw and explain the construction of underground cables.

Description : Draw and explain the construction of underground cables. 

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the classification of cables. (i) According with voltage levels. (ii) According to numbers of core.

Description : the classification of cables. (i) According with voltage levels. (ii) According to numbers of core.  

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When measuring insulation resistance of cables using d.c. source, the galvanometer used should be initially

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For transmission of power over a distance of 200 km, the transmission voltage should be (a) 132 kV (b) 66 kV (c) 33 kV (d) 11 kV

Description : For transmission of power over a distance of 200 km, the transmission voltage should be (a) 132 kV (b) 66 kV (c) 33 kV (d) 11 kV

Last Answer : (a) 132 kV

63 The dielectric strength of transformer oil is expected to be A. 1kV B. 33kV C. 100kV D. 330 kV

Description : 63 The dielectric strength of transformer oil is expected to be A. 1kV B. 33kV C. 100kV D. 330 kV

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The disadvantage with paper as insulating material is (a) it is hygroscopic (6) it has high capacitance (c) it is an organic material (d) none of the above

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The insulating material should have (a) low permittivity (b) high resistivity (c) high dielectric strength (d) all of the above

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Description : What is the type cable used in radiation areas?

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Why bimetallic washers provided in aluminium copper transition joints?

Description : Why bimetallic washers provided in aluminium copper transition joints?

Last Answer : To avoid galvanic corrosion failure.