Do you go to the same people during your high and low moments?

1 Answer

Answer :

My mom, my neighbours, and outreach workers and ask-public.

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Last Answer : Methods for measurement of low resistance:  1. Ammeter voltmeter method  2. Kelvin's bridge method  3. Ohm meter method  4. Potentiometer method  5. Digital/analog multi-meter ... must be infinity for perfectly accurate measurement which is not possible.  2. Connection errors.

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Last Answer : Step-down transformer converts high voltage and low current into: Low voltage and high current

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Last Answer : (b) short-circuit current of the system is increased

Description : For aluminium, as compared to copper, all the following factors have higher values except (a) specific volume (6) electrical conductivity (c) co-efficient of linear expansion (d) resistance per unit length for same cross-section

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Description : As compared to a 2-wire D.C. distributor, a 3-wire distributor with same maximum voltage to earth uses only (a) 31.25 percent of copper (b) 33.3 percent of copper (c) 66.7 percent of copper (d) 125 percent of copper

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Description : Transmitted power remaining the same, if supply voltage of a D.C. 2-wire feeder is increased 100 percent, saving in copper is (a) 25 percent (b) 50 percent (c) 75 percent (d) 100 percent

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Description : In a tap changing transformer, the tappings are provided on (a) primary winding (b) secondary winding (c) high voltage winding (d) any of the above

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Last Answer : (c) mild steel

Description : The power transmitted will be maximum when (a) corona losses are minimum (b) reactance is high (c) sending end voltage is more (d) receiving end voltage is more

Last Answer : (c) sending end voltage is more

Description : The material generally used for armour of high voltage cables is (a) aluminium (b) steel (c) brass (d) copper

Last Answer : (b) steel

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Last Answer : (b) paper

Description : High voltage transmission lines use (a) suspension insulators (b) pin insulators (c) both (a) and (b) (d) none of the above

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Description : How to Paint High Ceilings

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Description : State the advantages of use of high voltage in transmission of Electric power. 

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Description : Limitation and application of High Voltage DC (HVDC)

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Description : Which of the following thyristors can be used for high frequency of operation? A) TRIAC B) DIAC C) SCR D) GTO 

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Description : Which of the following circuit breakers has high reliability & minimum maintenance?  (A) Bulk oil type CB (B) Air blast CB (C) Vacuum CB (D) Sulphur hexafluoride CB 

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Description : The number of cycles in which a high speed circuit breaker can complete its operation is  (A) 3 to 8 (B) 10 to 18 (C) 20 to 30 (D) 40 to 50

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Description : Which type of ADC gives high resolution?

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Description : At very high temperatures, extrinsic semiconductor becomes intrinsic semiconductor because (A) Of drive in diffusion of dopants & carriers. (B) Band to band transition dominates impurity ionization. (C) ... band to band transition. (D) Band to band transition is balanced by impurity ionisation.

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Description : For high efficiency of transfer of power, internal resistance of the source should be?

Last Answer : For high efficiency of transfer of power, internal resistance of the source should be less than the load resistance.

Description : All good conductors have high?

Last Answer : All good conductors have high conductance.

Description : Wire-wound resistors are unsuitable for use at high frequencies because they?

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Description : Power factor of the system is kept high?

Last Answer : Power factor of the system is kept high to reduce line losses, to maximise the utilization of the capacities of generators, lines and transformers, to reduce voltage regulation of the line.

Last Answer : For measurement of inductance having high value, we should use Hay's bridge.

Last Answer : For measurements on high voltage capacitors, the suitable bridge is Schering bridge.

Last Answer : For measuring a very high resistance we should use Meggar.

Last Answer : For measuring current at high frequency we should use thermocouple instrument.

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Last Answer : An induction motor has relatively high power factor at near full load.

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Last Answer : High load factor indicates total plant capacity is utilised for most of the time.

Last Answer : Depreciation charges are high in case of thermal plant.

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Description : Why a dc series motor has a high starting torque?

Last Answer : motor

Description : Why does induction motor have high starting current?

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Description : What can cause high amperage on a motor?

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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 : What is meant by extra high voltage transmission?

Last Answer : HT & LT  two types transmission in industrial line 

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Last Answer : when voltage has increased due to reduced current flow, thus power loss given by ( I^2R) will be low due to reduced current(I^2) provided that resistance (R) is constant.

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Last Answer : The primary reason that power is transmitted at high voltages is to increase efficiency. ... The lower current that accompanies high voltage transmissionreduces resistance in the conductors aselectricity flows ... This means that thin, light-weight wires can beused in long-distance transmission.

Description : What are the advantages of high voltage transmission?

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Last Answer : Reduced copper losses Smaller conductor size Improve voltage regulation Increase system capability Less energy bill

Description : Why transmission voltages are high?

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Last Answer : yes High Voltage side of Transformer winding have more number of turns. and low voltage side of Transformer winding have less number of turns.