مركز الاختبارات الالكترونية و المحوسبة

Unit -16: Verify compliance of low voltage systems Quiz 2

رقم السؤال: 1 درجة السؤال: 1

a. Power transformer

b. Distribution transformer

c. Welding machine transformer

d.Three phase transformer

رقم السؤال: 2 درجة السؤال: 1

100A

30A

15A

60A

رقم السؤال: 3 درجة السؤال: 1

a. Large loads such as electric motors being switched on

b. The run of circuit conductors is long and there is high resistance in the conductors

c. Sudden change in loads

d. The loss of power

رقم السؤال: 4 درجة السؤال: 1

a.Connects the main earthing to the earth electrode

b.Connects any portion of the earthing system to the portion of the electrical installation

c.Connects to the general mass of the earth

d.Links the earth with the electrode

رقم السؤال: 5 درجة السؤال: 1

a. Power transformer

b. Distribution transformer

c. Welding machine transformer

d. Three phase transformer

رقم السؤال: 6 درجة السؤال: 1

a.Wattmeter and phase sequence indicator

b.Phase sequence indicator and static type phase sequence indicator

c.Static type phase sequence indicator and ohmmeter

d.Wattmeter and static type phase indicator.

رقم السؤال: 7 درجة السؤال: 1

a. Earthing

b. Bonding

c. Basic protection

d. Fault protection

رقم السؤال: 8 درجة السؤال: 1

a. 0.25M ohms

b. 2.0M ohms

c. 1.0M ohms

d. 0.5M ohms

رقم السؤال: 9 درجة السؤال: 1

a. Protection against over voltage

b. Protection against under voltage

c. Protection against over current

d. Stabilize the neutral voltage to zero at the start of the installation and provide the lowest to fault currents possible impedance to

رقم السؤال: 10 درجة السؤال: 1

a. Protective devices like fuses and breakers would not be activated

b. Over voltage

c. Over current

d. Under voltage

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من نحن | شروط الاستخدام | سياسة الخصوصية