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SSC JE Electrical 2019 with solution SET-1

SSC JE Electrical 2019 with solution SET-1
 In the circuit shown, if R = 0, then the phase angle between v(t) and i(t) is

90°
30°
0°
60°

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

In the given circuit if R = 0 then the circuit becomes purely inductive. So the phase angle between v(t) and i(t) is 90°.


SSC JE Electrical 2019 with solution SET-1
In the circuit shown, the pressure coils of two wattmeters are connected to

R
Y
B
Neutral Wire

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

In Two wattmeter method the current coils of the wattmeter are connected with any two lines, say R and Y and the potential coil of each wattmeter is joined across the same line, the third line i.e. B as shown below in the figure . In the circuit B is the common point for both the wattmeter.

SSC JE Electrical 2019 with solution SET-1
 Which of the following lamps employs a bimetallic strip?

Fluorescent lamp
Incandescent lamp
Sodium vapor lamp
Mercury vapor lamp

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SSC JE Electrical 2019 with solution SET-1
________ is used to manufacture stay wire, earth wire, and structural components

Hard drawn copper
Nichrome
Cadmium copper
Galvanized steel

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Galvanized steel conductors do not corrode, and possess high resistance. Hence such Wires are used in telecommunications circuits, earth wires, guard wire, stray wire, etc.
 

SSC JE Electrical 2019 with solution SET-1
 Which of the following losses is together called iron losses?

Hysteresis loss and copper loss
Eddy current loss and hysteresis loss
Eddy current loss and frictional loss
Hysteresis loss and frictional loss

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SSC JE Electrical 2019 with solution SET-1
______ Opposes the change in circuit voltage

Inductance
Capacitance
Inductive reactance
Resistance

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