Electrical Engineering Quiz 2

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Part 2
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1. The voltage applied across an electric iron is halved. The power consumption of the iron will be:

5 points

a. one-half

b. one-fourth

c. 1/√2times

d. three-fourth

Clear selection

2. Resistance of 200w,250v lamp will be

5 points

a. 625ohm

b. 1250ohm

c.312.5ohm

d.31.25ohm 1

Clear selection

3. Two heaters rated at 1000w, 250v each are connected in series across a 250v, 50Hz ac supply. The total power drawn from the supply will be:

5 points

a. 1000w

b. 500w

c. 250w

d.2000w

Clear selection

4. A 200w, 100v lamp is to be operated on 250v supply. The additional resistance required to be connected in series will be

5 points

a. 125ohm

b. 50ohm

c. 75ohm

d.25ohm

Clear selection

5. Kirchoff's laws are valid for

5 points

a. linear ckt only

b. passive time invariant ckt

c. non-linear ckt only

d. both linear & non-linear ckt

Clear selection

6. KCL is applicable only to

5 points

a. electric circuits

b. electronic circuits

c. junctions in a network

d. closed loop in a network

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7. KVL is concerned with

5 points

a. IR drop

b. battery emf

c. junction node

d. both a and b

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8. A wye arrangement of resistances has each resistance of 3ohm, the equivalent delta arrangement will have each resistance of values

5 points

a. 9ohm

b. 6ohm

c. 3ohm

d. 1ohm

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9. A battery is connected to a resistance causing a current of 0.5A in the circuit. The current drops to 0.4 when an additional resistance of 5? is connected in series . The current will drop to 0.2A when the resistance is further increased by

5 points

a. 10 ohm

b. 15ohm

c. 25ohm

d.5 ohm

Clear selection

10. Cells are connected in series in order to increase the

5 points

a. current capacity

b. life of the cells

c. voltage rating

d. terminal voltage

Clear selection

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