SSC JE / State Electricity Boards JE Electrical Exams QUIZ-8

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Question 1

The torque-speed characteristic of a repulsion motor resembles which of the following d. c. motor characteristic?

• Aseparately excited
• Bshunt
• Cseries
• Dcumulatively compounded

Question 2

A ideal transformer has 66 turns in the secondary. The number of primary turns is………………..

• A440
• B660
• C550
• D330

Question 3

In a string of suspension insulators, the shunt capacitance can be decreased by using

• Alonger cross-arms
• Bshorter cross-arms
• Clonger spans
• Dnone of the above

Question 4

A wire placed on the top of a transmission line acts as

• Aa phase wire
• Bneutral
• Ca transmission wire
• Dground wire

Question 5

In Figure, and V = 17 sin(2000t) volts. The total equivalent impedance in rectangular form is

• A
• B
• C
• D

Question 6

In a two wattmeter method reading of both wattmeter are 1000W and 500W then find power factor of the load is –

• A0.693
• B0.866
• C0.424
• D0.5

Question 7

For a half wave rectified sine wave the ripple factor is:

• A1.00
• B1.65
• C1.45
• D1.21

Question 8

The relative permeability of the rectangular core shown in Fig. is 750. What is the flux density in the core?

• A0.5 T
• B1.2 T
• C0.047 T
• D0.23 T

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