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SSC JE / State Electricity Boards JE Electrical Exams QUIZ-2

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Question 1

In an alternator, the armature reaction is purely cross-magnetising at a power factor of

Question 2

The nameplate of a 1-phase, 4-pole induction motor gives the following data:
Output 373 W; 230 V
Frequency 50 Hz; Input current 2. 9 A
Power factor 0. 71; Speed 1410 r. p. m.
The full-load slip of the motor is

Question 3

A factory takes a steady load of 200 kW at a lagging power factor of 0.8. The tariff is Rs. 100 per kVA of maximum demand per annum plus 5 paise per kWh. The phase advancing plant costs Rs. 500 per kVAR and the annual interest and depreciation together amount to 10%. Assuming the factory works for 5000 hours in a year, If the power factor is improved to 0.866 lagging by installing phase advancing plant, the new annual energy bill will be

Question 4

The line voltage of a 2-wire d.c. system is raised from 200 V to 400 V for the same power transmitted over the same distance having the same power loss. What is the current supplied by 400 V system?

Question 5

The KCL and KVL is applicable for

Question 6

A particular ammeter having sensitivity 2.5 mm/A produce a change in deflection of the pointer by 5mm. Calculate change in input –

Question 7

For the emitter follower circuit shown in Fig the value of r_e is 12.12 ohm_., the voltage gain of the emitter follower circuit is

Question 8

Three capacitors of capacitance $Description: Description: E:\Gate\SSC-JE Electrical - Part 1\6_Capacitance-final_files\image168.png$ each are available. The minimum and maximum capacitance which may be obtained are

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