1. Which is the used power factor improvement-

Spring motor

Commutator motor

Synchronous motor

Squirrel Case Motor

2. Active power is equal to-

F Z

VI Sin

VI Cos

None

3. One Cubic water is equal to-

74.6 U.S Gallon

628 pound water

28.375 Line

28.3 Cubic meter

4. Which power factor is more economical for the consumers-

0.85 Lagging

0.95 Lagging

0.10 Leading

0.85 Leading

5. What would be the charge of a uF when connected with 20V supply?

2000 uC

200 uC

300 uC

30 uC

6. Three equal resistors of hundred ohm is connected in series across a source of E.m.f 30V.What would be the power consumed by is resistor?

10 W

30 W

90 W

60 W

7. The unit of resistivity is

Ohms

Ohm-m

Ohm/sqm

None

8. The phenomena of creeping occurs in

Ammeter

Voltmeter

Wattmeter

Watt-hour meter

9. Common declared distribution voltage in Bangladesh for low voltage circuit is –

230 Volt

440 Volt

250 Volt

350 Volt

10. Which distribution system is more reliable?

Ring main system

Tree system

Radial system

All are equally reliable.