Which one of the following is a passive element to an electric circuit?

SSC JE Electrical 2018 with solution SET-1
Which one of the following is a passive element to an electric circuit?

Battery

Current source

Resistors

Voltage source

Battery

Current source

Resistors

Voltage source

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SSC JE Electrical 2018 with solution SET-1
Which one of the material is used to fix the screw on concrete wall and ceiling?

Saddles

Bushings

Link clips

Rawl Plug

Saddles

Bushings

Link clips

Rawl Plug

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SSC JE Electrical 2018 with solution SET-1
What is the magnitude of the reactive power (in kVAR) of a balanced 3-phase delta connected system having the line voltage of 400 V and the line current of 50 A and the phase difference between the voltage and current is 53.13 degrees?

27.71

2.771

277.1

0.2771

27.71

2.771

277.1

0.2771

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SSC JE Electrical 2018 with solution SET-1
Starting winding of a single-phase motor of a refrigerator is disconnected from the circuit by means of a

None of these

Thermal Relay

Magnetic Relay

Centrifugal Switch

None of these

Thermal Relay

Magnetic Relay

Centrifugal Switch

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SSC JE Electrical 2018 with solution SET-1
The speed of the ceiling fan is about

Upto 10000 RPM

Upto 10 RPM

Upto 450 RPM

Upto 200 RPM

Upto 10000 RPM

Upto 10 RPM

Upto 450 RPM

Upto 200 RPM

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SSC JE Electrical 2018 with solution SET-1
For Proper Operation of the transistor, its collector should have

Proper Reverse Bias

Very small size

Proper Forward Bias

None of these

Proper Reverse Bias

Very small size

Proper Forward Bias

None of these

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A Bipolar Junction Transistor (BJT) is a three-layer, two junction semiconductor device consisting of either two N-type and one P-type layer of material (NPN transistor) or two P-type and one N-type layer of material (PNP transistor). A transistor can be visualized as two back-to-back connected diodes; by placing two PN junctions together, we can create a bipolar transistor with the three terminals – emitter, base, and collector. The term bipolar is to justify the fact that holes and electrons participate in the injection process into the oppositely polarised material. If only one carrier is employed (electron or hole), it is considered a unipolar device. For proper working of the transistor, the two junctions of the transistor should be properly biased, the base-emitter (J1) junction should be forward biased and the base-collector (J2) junction should be reverse biased. In a PNP transistor, the majority charge carriers are holes and germanium is favored for these devices. In an NPN transistor, the majority charge carriers are electrons and silicon is best for NPN transistors. The thin and lightly doped middle layer is known as the base (B) and the two outer regions are known as the emitter (E) and the collector (C).
Under the proper operating conditions, the emitter region emits or injects majority charge carriers into the base region and because the base is very thin, most of these electrons will ultimately reach the collector. The emitter is highly doped to reduce resistance and emit more majority charge carriers. The collector is lightly doped to reduce the junction capacitance of the collector-base junction. The schematics and the circuit symbols for bipolar transistors are shown in Fig. The arrows on the schematic symbols indicate the direction of emitter-current flow. The collector is usually at a higher voltage than the emitter and for proper operation, the base-emitter junction is forward biased while the collector-base junction is reverse biased.

SSC JE Electrical 2018 with solution SET-1

SSC JE Electrical 2018 with solution SET-1 Which one of the following is a passive element to an electric circuit?

SSC JE Electrical 2018 with solution SET-1 Which one of the material is used to fix the screw on concrete wall and ceiling?

SSC JE Electrical 2018 with solution SET-1 What is the magnitude of the reactive power (in kVAR) of a balanced 3-phase delta connected system having the line voltage of 400 V and the line current of 50 A and the phase difference between the voltage and current is 53.13 degrees?

SSC JE Electrical 2018 with solution SET-1 Starting winding of a single-phase motor of a refrigerator is disconnected from the circuit by means of a

SSC JE Electrical 2018 with solution SET-1 The speed of the ceiling fan is about

SSC JE Electrical 2018 with solution SET-1 For Proper Operation of the transistor, its collector should have

SSC JE Electrical 2018 with solution SET-1
Which one of the following is a passive element to an electric circuit?

SSC JE Electrical 2018 with solution SET-1
Which one of the material is used to fix the screw on concrete wall and ceiling?

SSC JE Electrical 2018 with solution SET-1
What is the magnitude of the reactive power (in kVAR) of a balanced 3-phase delta connected system having the line voltage of 400 V and the line current of 50 A and the phase difference between the voltage and current is 53.13 degrees?

SSC JE Electrical 2018 with solution SET-1
Starting winding of a single-phase motor of a refrigerator is disconnected from the circuit by means of a

SSC JE Electrical 2018 with solution SET-1
The speed of the ceiling fan is about

SSC JE Electrical 2018 with solution SET-1
For Proper Operation of the transistor, its collector should have