26 views
in High voltage engineering by
What is the lowest acceptable insulation resistance for a cable?

Your answer

Thanks for your contribution. Feel free to answer this question. Please avoid short answer. Your answer is most welcome. Be genuine.

Upload image or document:

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
Are you a robot ? (Y = Yes / N = No)
To avoid this verification in future, please log in or register.

Related questions

1 answer 61 views

If the insulation resistance of a cable of length 10 km is 1 mega ohm, its insulation resistance for 50 km length will be

asked May 8, 2018 in Electric Power Transmission by Shimroz123
0 answers 19 views

What is an insulation resistance test?

asked Mar 10, 2018 in High voltage engineering by Quiz
1 answer 18 views

Name the method used to measure following resistances:- (i) Low resistance (ii) Medium resistance (iii) Insulation resistance (iv) Earth resistance.

asked Sep 6, 2018 by Shimroz123
1 answer 26 views

When measuring insulation resistance of cables using d.c. source, the galvanometer used should be initially short circuited because  (A) Cables have a low value of capacitance which draws a high value of charging current (B) Cables have a low value of initial resistance (C) Cables have a high value of capacitance which draws a high value of charging current (D) Cables have a low value of capacitance and initial resistance

asked Apr 28, 2018 in Electrical Measurements and Instrumentation by Shimroz123
0 answers 20 views

What is double or reinforced insulation?

asked Mar 10, 2018 in High voltage engineering by Quiz
0 answers 13 views

What is basic insulation level?

asked Mar 10, 2018 in High voltage engineering by Quiz
0 answers 25 views

What do you mean by insulation coordination?

asked Mar 10, 2018 in High voltage engineering by Quiz
1 answer 446 views

A single core cable is designed to work for a single phase system with a peak voltage of 220 kV. The maximum permissible stress in the dielectric is not to exceed 20 kV/mm. For economical size, the overall core diameter of the cable is (A) 28.2 mm (B) 26.4 mm (C) 24.4 mm (D) 22.0 mm

asked Apr 28, 2018 in Electrical Engineering by Shimroz123
1 answer 35 views

what is the use of bedding on underground cable?

asked Dec 4, 2017 in Electric Power Transmission by Quiz
1 answer 29 views

How rating of main switch and cable is selected for Industrial Installation.

asked Sep 20, 2018 in Industry Electrical Systems-I by Shimroz123
1 answer 16 views

Which of the following has the lowest electrical conductivity? A) Mercury B) Silver C) Copper D) Gold

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
1 answer 24 views

Which of the following waveforms has the lowest form factor? A) Sine wave B) Square wave C) Sawtooth wave D) Triangle wave

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
1 answer 21 views

Which configuration has the lowest current gain ?

asked Mar 8, 2018 in Electronics Engineering by Quiz
1 answer 37 views

The velocity of travelling wave through a cable of relative permittivity 36 is

asked May 3, 2018 in Physics by Shimroz123
1 answer 18 views

The insulation on a current carrying conductor is provided?

asked Mar 25, 2018 in Basic concepts by Shimroz123
1 answer 24 views

A single core lead sheathed cable with two dielectrics of permittivity 4 and 3, respectively, are subjected to same maximum stress. If the conductor diameter is 1.5 cm, the outer diameter of the first dielectric is (A) 1.125 cm (B) 1.5 cm (C ) 2 cm (D) 8 cm

asked Apr 28, 2018 in Power system by Shimroz123
1 answer 15 views

The thickness of insulation provided on the conductor depends on?

asked Mar 25, 2018 in Basic concepts by Shimroz123
1 answer 32 views

State functions of ; i) Cable box ii) Guard wire iii) Shackle insulator iv) Stay wire used in service connection

asked Sep 20, 2018 in Industry Electrical Systems-I by Shimroz123
0 answers 20 views

A megger is to measure insulation resistance of a cable. The cable should be connected to   (a) Battery (b) DC supply (c) AC supply (d) No supply  

asked Apr 10, 2018 in Electrical Engineering by Shimroz123
1 answer 56 views

What is the resistance of a coil which draws 10 A and dissipates 1520 W? A) 152 Ω B) 15.2 Ω C) 1.52 Ω D) None of these

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
1 answer 23 views

Consider a cube of material of sides 1 cm with a resistance of 0.003 Ω between its opposite faces. What is the resistance if the same volume of the material is drawn into a length of 50 cm with a uniform cross – section? A) 0.003 Ω B) 0.15 Ω C) 7.5 Ω D) None of these

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
1 answer 62 views

What is the resistance of a 160 m wire with a uniform diameter of 0.28 mm, if the specific resistance is 12.32 μΩ-cm? A) 3.2 Ω B) 3.2 μΩ C) 0.8 Ω D) None of these

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
1 answer 32 views

Ratio of the rotor reactance X to the rotor resistance R for a two-phase servo motor (A) is equal to that of a normal induction motor (B) is less than that of a normal induction motor (C) is greater than that of a normal induction motor (D) may be less or greater than that of a normal induction motor

asked Apr 28, 2018 in Electronics Engineering by Shimroz123
2 answers 31 views

What happens to the resistance of a wire when its length as well as the cross-sectional area are doubled? A) It doubles B) It becomes 4 times C) It becomes 2π times D) It remains the same

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
0 answers 15 views

What is the mathematical relationship between resistance and conductance?

asked Jun 29 by Shimroz123
1 answer 22 views

What is the total resistance if 5 resistors of 20 Ω each are connected in series? A) 100 Ω B) 4 Ω C) 20 Ω D) None of these

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
2 answers 18 views

What is the relationship between power and resistance?

asked Mar 15, 2018 in Electrical Engineering by Quiz
1 answer 20 views
1 answer 17 views

Resistance grounding is normally used for :  (A) high voltage long over head transmission lines  (B) low voltage short over head transmission lines  (C) extra high voltage long over head transmission lines  (D) all the above

asked Apr 30, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 9 views

State the range for low and medium resistance.

asked Sep 6, 2018 by Shimroz123
1 answer 26 views

For maximum transfer of power, internal resistance of the source should be?

asked Mar 25, 2018 in Network Analysis by Shimroz123
0 answers 11 views

What is meant by resistance heating?

asked Mar 11, 2018 in Utilization of electrical energy by Quiz
1 answer 15 views

What happens to the resistance when the current increases?

asked Mar 15, 2018 in Electrical Engineering by Quiz
1 answer 27 views

What should be the ideal resistance of ammeter ?

asked Mar 8, 2018 in Electronics Engineering by Quiz
1 answer 72 views

 A resistor in which the resistance changes exponentially with change in temperature is called as A) Potentiometer B) Phototransistor C) Varactor D) Thermistor 

asked Jun 18, 2018 in Electrical Engineering by Shimroz123
1 answer 15 views

A 200 V DC machine supplies 20 A at 200 V as a generator. The armature resistance is 0.2 Ohm. If the machine is now operated as a motor at same terminal voltage and current but with the flux increased by 10%, the ratio of motor speed to generator speed is

asked May 8, 2018 in Electrical Machine by Shimroz123
1 answer 39 views

The normal value of the armature resistance of a d.c. motor is?

asked Mar 26, 2018 in DC motor by Shimroz123
1 answer 27 views

The resistance of a few meters of wire conductor in closed electrical circuit is?

asked Mar 25, 2018 in Basic concepts by Shimroz123
1 answer 22 views

Name two methods for measurement of low, medium and high resistance. Give one advantage and one limitation of V- I method.

asked Sep 6, 2018 by Shimroz123
1 answer 36 views

A 200 V dc shunt motor is running at 1000 rpm and drawing a current of 10 A. Its armature winding resistance is 2 Ohm. It. is braked by plugging. The resistance to be connected in series with armature to restrict armature current to 10 A, is

asked May 3, 2018 in Electrical Machine by Shimroz123
1 answer 37 views

If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes?

asked Mar 25, 2018 in Basic concepts by Shimroz123
1 answer 50 views

An A.C. voltage is impressed across a pure resistance of 3.5 ohms in parallel with a pure inductance of impedance of 3.5 ohms?

asked Mar 25, 2018 in Electrical Engineering by Shimroz123

Welcome to electronics2electrical.com here you can ask questions related to electrical, electronics, mechanical, telecommunication, instrumentation, computer, mathematics, physics etc.
Be respectful to all the members. Do not copy and paste the answers from other websites which have copyright content. While asking question give full details about it.

Categories

Most popular tags

power motor dc circuit transformer voltage current used system phase resistance factor synchronous load ac energy induction electric generator series frequency between speed capacitor use electrical meter line difference control type mosfet transmission magnetic plant high single instrument bjt unit source advantages function diode and machine winding field define torque parallel amplifier supply shunt thyristor motors electricity arduino maximum time relay armature problem value on transformers types coil diagram state flow ratio material three formula starting direction theorem method emf operating efficiency digital wave microprocessor test instruments inductance loss measure operation connected signal low applications effect single-phase network temperature working constant losses different law wattmeter measuring compare controlled breaker drive device logic rc full switch flux wire resistivity disadvantages free of materials machines angle force converter conductor transistor gain open protection scr core measurement number bridge principle generators reactance circuits negative the friction iron loop short pole battery conservation steam resistors hysteresis computer using analog lines secondary station gate a rectifier inverter linear induced relays nuclear capacitance basic characteristics design direct work rotor electronics ammeter forces diesel damping rlc connection factors capacitors minimum insulation moving regulation running self systems air fault range main stability quality starter igbt eddy alternator ideal rl average 3-phase plants arc thermal error fuzzy biasing dielectric pressure balanced superposition errors copper rotation feedback impedance measured electronic electrons charge inductive transfer explain start off back curve over solar is three-phase tariff locomotive peak bias zener engineering commutator surge conductors rating universal potentiometer density permanent mechanical transducer capacity memory adc excitation two fuse pure harmonics application semiconductor inductor internal pmmc reaction welding resonance traction permeability breakers rms designed electromagnetic si generation brushes switching capacitive shaded rate 1 distribution resistor methods delta star oscillator reluctance simplification algebra 8085 boolean weston dynamometer insulating strength installation definition fuel heating earth units

8,450 questions

7,047 answers

133 comments

3,086 users

...