Quiz
13x ree.ee
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Fragen in diesem Quiz (16)
1The international ohm is defined as the resistance at zero degrees centigrade of _________ of uniform cross-section having a length of 106.3 cm and a mass of 14.4521 g.
- Aa cylinder of copper
- Ba cube of platinum
- Ca column of mercury
- Da cube of gold
2Which of the following conductors has highest resistance
- AManganin
- BNichrome
- CConstantan
- DSteel
3Permeability in a magnetic circuits corresponds to ________ in an electric circuit
- Aresistance
- Bresistivity
- Cconductivity
- Dconductance
4Which of the following materials has the highest value of dielectric constant?
- Aglass
- Bvacuum
- Cceramics
- Doil
5The presence of electric current is only made known by the effect it produces. Three important effects are:
- Aheating, electric shock and generation
- Bheating, magnetic and electric shock
- Cgeneration, chemical and electric shock
- Dheating, magnetic and chemical
6What is other term for American Wire Gauge
- AJIS
- BBrown and Sharpe
- CDIN
- DVDE
7AWG sizes are retrogressive. A larger number denotes smaller size and smaller the number the larger is the wire. Wire sizes from #10 to#20 aWG copper wires are in geometric progression with a common ratio of __________
- Asquare root of 2
- Bcube root of 3
- Csquare root of 3
- Dcube root of 2
8In metric standard, as the number of gauge increases, the size __________
- Ado not change
- Bdoes change
- Cdecreases
- Dincreases
9What is the heating process makes use of the current induced by the electromagnetic action in the charge to be heated, used for hardening of steel.
- AInduction heating
- BConvection
- CDielectric heating
- DInfrared heating
10the cgs unrationalized unit of magnetomotive force is _____________
- AOersted
- BMaxwells
- CGilberts
- DAmpere-turn
11What will happen to an insulating medium with voltage more than breakdown voltage is applied?
- Ait will get punctured
- Bit will become magnetic
- Cit will melt
- Dits molecular structure will change
12The root mean square value of ac is the same as
- Ainstantaneous value
- Baverage value
- Ceffective value
- Dmaximum value
13the rms value of the sine wave is equal to
- A0.637 max. value
- B0.506 max. value
- C0.707 max. value
- D1.414 max. value
14the form factor is defined as ________
- Aeffective value / rms value
- Brms value / average value
- Crms value / peak value
- Dmax value / rms value
15the phase angle of a series RL circuit is the angle between the _______ phasor and the _______ phasor
- Aresistance, inductive reactance
- Binductive reactance, impedance
- Cresistance, impedance
- Dnone of the above
16in series as well as in parallel resonant circuits, increasing the value of resistance would lead to
- Aincrease in the band-width of both the circuits
- Bdecrease in the band-width of both the circuits
- Cincrease in the band-width in the series circuits and decrease in parallel circuit
- Ddecrease in the band-width in the series circuits and increase in parallel circuit
Informationen
- Beschreibung
- Quiz am 13x ree.ee, erstellt von Lex Magtalas am 12/02/2015.
- Autor
- Lex Magtalas
- Sprache
- English
- Aufrufe
- 18
- Bewertung
- Noch keine Bewertungen Bewerte dieses Quiz