Question 1

what is relation between current and voltage?

Accepted Answer

v= i*r

Answer

v=r/i

Answer

r=i*v

Answer

i=v*r

Question 2

what do these symbols 1 show?

Accepted Answer

ammeter

Answer

voltametter

Answer

voltage source

Answer

current source

Question 3

what do this symbols (2)show?

Accepted Answer

dc voltage source

Answer

AC voltage source

Answer

Ammeter

Answer

voltmeter

Question 4

if voltage =5 v, currenrt =10 then resistance= ?

Accepted Answer

.5 ohm

Answer

2ohm

Answer

1ohm

Answer

.2 ohm

Question 5

what do this symbol show (5)

Accepted Answer

switch

Answer

limit switch

Answer

contactor

Answer

switch board

Question 6

how can i control speed in AC motor?

Accepted Answer

by control frequency and voltage

Answer

by control current only

Answer

by control current and frequncy

Answer

by control current and voltage

Question 7

AC CURRENT MEAN

Accepted Answer

ALTERNATIVE CURRENT

Answer

AUTOMATIC CURRENT

Answer

AROMATIC CURRENT

Answer

ANOTHER CURRENT

Question 8

WHAT IS FREQUENCY IN BAHRAIN?

Accepted Answer

50 Hz

Answer

45 Hz

Answer

60 Hz

Answer

40 Hz

Question 9

what is regular  3 phase AC voltage applied in Bahrain?

Accepted Answer

380

Answer

390

Answer

370

Answer

360

Question 10

what is regular  1 phase AC voltage applied in Bahrain?

Accepted Answer

240

Answer

225

Answer

110

Answer

230

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