1 Answer

Answer :

Dielectric Constant and Dielectric Strength are same.

Related questions

Last Answer : A dielectric material is placed in between the plates of a capacitor, it Increases the capacitance.

Last Answer : The polarisation of dielectric material results in Creation of electric dipoles.

Description : Why is the dielectric strength of vacuum infinite?

Last Answer : The dielectric strength of vacuum is infinite because there isno molecule in the vacuum.

Description : Emulsifier protection is associated with: a) Grounding protection b) Dielectric strength protection of cables and conductors c) Lightning protection d) Fire protection

Last Answer : Ans: D

Description : The removal of paint from electrical equipment, such as generators, should be cautiously undertaken because ____________. A. the mechanical shock of paint removal lessens the dielectric strength ... phase windings frequently become isolated from each other due to dust interference at the terminals

Last Answer : Answer: B

Description : Which of the listed conditions could indicate the need for cleaning electrical insulation? A. Low ambient temperature B. Low operating temperature C. High dielectric strength D. Low megger readings

Last Answer : Answer: D

Description : The dielectric strength of a vacuum or dry air is approximately ________________. A. 450 volts/inch B. 1000 volts/inch C. 20-kv/inch D. 50-kv/inch

Last Answer : Answer: C

Description : A megohmmeter is used to measure _____________. A. voltage B. dielectric strength C. current D. power

Last Answer : Answer: B

Description : When using a megohmmeter to test the dielectric strength of wire insulation, a continuous series of slight downscale kicks by the pointer is result of ____________. A. good insulation B. the ... dirty insulation C. the capacitance of the windings D. the dielectric-absorption effect of the insulation

Last Answer : Answer: B

Description : When a megohmmeter is used to test the dielectric strength of wire insulation, the initial dip of the pointer toward 'zero' is caused by _____________. A. good insulation B. the leakage of ... of dirty insulation C. the capacitance of the circuit D. the dielectric absorption effect of the insulation

Last Answer : Answer: C

Description : Which of the following statements about copper wire sized by the AWG rating is correct? A. Number 12 AWG wire has a higher current rating than number 10 AWG wire. B. Number 10 AWG wire has a higher ... Number 12 AWG wire at 25°C has more resistance per 1000 feet than No. 10 AWG wire at 25°C.

Last Answer : Answer: D

Description : Which of the following statements concerning copper wire sized by AWG numbers is correct? A. Number 12 AWG wire has a higher current rating than 10 AWG wire. B. Number 12 AWG wire at 25°C has more ... dielectric strength than 12 AWG wire. D. Number 12 AWG wire is larger than number 10 AWG wire.

Last Answer : Answer: B

Description : Which of the following tests is not done for transformer oil? (A) Flash point and acid value (B) Aniline point (C) Dielectric strength (D) Copper strip corrosion test

Last Answer : (B) Aniline poin

Description : Dielectric strength of a material is (A) Its energy storage capacity (B) A magnetic property (C) Its capacity to resist the flow of current (D) Its capacity to withstand high voltage

Last Answer : (D) Its capacity to withstand high voltage

Description : What is meant by Dielectric strength? 

Last Answer : The maximum electrical potential gradient that a material can withstand without rupture usually specified in volts/millimeter of thickness. This also has known as electric strength. 

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

Last Answer : (d) all of the above

Description : 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

Last Answer : (b) 10 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

Last Answer : (c) 30 kV/mm

Description : The insulating material for a cable should have (a) low cost (b) high dielectric strength (c) high mechanical strength (d) all of the above

Last Answer : (d) all of the above

Description : How is the dielectric strength of an insulator determined?

Last Answer : By raising the voltage on a test sample until it breaks down.

Description : Define dielectric strength.

Last Answer : The ability of the insulation material to withstand potential difference.

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

Last Answer : B. 33kv

Description : The dielectric strength of transformer oil should be (A) 100 V. (B) 5 KV. (C) 30 KV. (D) 132 KV.

Last Answer : (C) 30 KV.

Description : Describe dielectric strength of material.  

Last Answer : Dielectric strength of material: Dielectric strength is the ability of a dielectric material of specified thickness to withstand at high voltage without breaking down. It is a measure of the strength of ... strength can withstand at high voltage. It is expressed in the unit of kV/cm.

Description : Define Dielectric Strength for transformer oil. State its value for new transformer oil.

Last Answer : Dielectric strength is defined as the maximum voltage that can be applied to across to the Fulid with out electrical breakdown is called Dielectric strength.

Description : Define breakdown voltage and dielectric strength of a capacitor.

Last Answer : Breakdown Voltage: The voltage at which the dielectric material breaks down (Starts conducting or is no longer remains as an insulator) for a specified thickness, is called its breakdown ... without breaking down (without losing its dielectric property) is called its dielectric strength. 

Description : Define : (i) Dielectric strength (ii) Breakdown voltage

Last Answer : (i) Dielectric strength: The voltage which a dielectric material can withstand without breaking down (without losing its dielectric property) is called its dielectric strength. It is represented by kV/mm ... or is no longer an insulator) for a specified thickness, is its breakdown voltage. 

Description : What is dielectric strength of an insulating material? What is its unit?

Last Answer : Dielectric Strength: The dielectric strength of an insulating material is the maximum voltage which the insulating medium can withstand without breakdown. Unit is volts per millimeter (V/mm), or kV/mm or kV/cm

Description : Define dielectric strength for a capacitor.

Last Answer : Ans: Di-electric Strength for a capacitor: The voltage which a dielectric material can withstand without breaking down (without losing its dielectric property) is called as dielectric strength.

Description : For an insulating material, dielectric strength and dielectric loss should be respectively   (A) high and high (B) low and high (C) high and low (D) low and low.

Last Answer : For an insulating material, dielectric strength and dielectric loss should be respectively  high and low 

Description : The dielectric strength of impregnated papers is about   (a) 20 kV/mm (b) 30 kV/mm (c) 15 kV/mm (d) 5 kV/mm 

Last Answer : The dielectric strength of impregnated papers is about 30 kV/mm

Description : The dielectric strength of transformer oil is expected to be?

Last Answer : The dielectric strength of transformer oil is expected to be 33 kV.

Description : What is the dependence of mechanical force per unit area of charged conductor on the surface charge density and the dielectric constant of the medium

Last Answer : What is the dependence of mechanical force per unit area of charged conductor on the surface charge density and the dielectric constant of the medium

Description : The 'dielectric constant' of dry air or a vacuum is _______. A. 1 B. 10 C. 100 D. 1000

Last Answer : Answer: A

Description : The 'dielectric constant' is a numerical value indicating the effectiveness of a dielectric material in comparison to that of a standard, which is _______________. A. paper or cloth B. glass or mica C. plastic or Teflon D. dry air or a vacuum

Last Answer : Answer: D

Description : The ratio of speed of light in air to the speed of light in another substance is called the a. Speed factor b. Index of reflection c. Index of refraction d. Dielectric constant

Last Answer : c. Index of refraction

Description : What is the time delay introduced by a 75-ft coaxial cable with a dielectric constant of 2.3? A. 1.54 ns B. 11.5 ns C. 115.6 ns D. 1156 ns

Last Answer : C. 115.6 ns

Description : What is the dielectric constant of polyethylene (PE) insulator? A. 2.5 B. 3.3 C. 2.27 D. 2.1

Last Answer : C. 2.27

Description : Referred to the dielectric constant of a transmission line material. A. Inductance and capacitance B. Velocity factor C. Characteristic impedance D. Propagation velocity

Last Answer : B. Velocity factor

Description : What is the impedance of a balance 4-wire with a diameter of 0.25 cm and spaced 2.5 cm apart using an insulator with a dielectric constant of 2.56? A. 100Ω B. 65Ω C. 75 Ω D. 50 Ω

Last Answer : A. 100Ω

Description : Calculate the phase constant of a dielectric with frequency 6 x 10 6 in air. a) 2 b) 0.2 c) 0.02 d) 0.002

Last Answer : c) 0.02

Description : Calculate the loss tangent when the dielectric constant in AC field is given by 3 + 2j. a) (2/3) b) (3/2) c) (-3/2) d) (-2/3)

Last Answer : d) (-2/3)

Description : Compute the refractive index when the dielectric constant is 256 in air. a) 2562 b) 16 c) 256 d) 64

Last Answer : b) 16

Description : Polarizability is defined as the a) Product of dipole moment and electric field b) Ratio of dipole moment to electric field c) Ratio of electric field to dipole moment d) Product of dielectric constant and dipole moment

Last Answer : b) Ratio of dipole moment to electric field

Description : The ratio of conduction to displacement current density is referred to as a) Attenuation constant b) Propagation constant c) Loss tangent d) Dielectric constant

Last Answer : c) Loss tangent

Description : Find the dielectric constant for a material with electric susceptibility of 4. a) 3 b) 5 c) 8 d) 16

Last Answer : b) 5

Description : Find the susceptibility of a material whose dielectric constant is 2.26. a) 1.26 b) 3.26 c) 5.1 d) 1

Last Answer : a) 1.26

Description : Dielectric constant will be high in a) Conductors b) Semiconductors c) Insulators d) Superconductors

Last Answer : c) Insulators

Description : The permittivity is also called a) Electrostatic energy b) Dielectric constant c) Dipole moment d) Susceptibility

Last Answer : b) Dielectric constant