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SSC JE / State Electricity Boards JE Electrical Exams QUIZ-4
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Question 1
The speed-torque characteristic of a dc series motor operating from a constant voltage supply is
Question 2
An 8-pole, 50 Hz, 1-phase induction motor runs at a speed of 690 r. p. m. Its slip for forward rotating flux is
Question 3
A 2-conductor cable 1 km long is required to supply a constant current of 200 A throughout the year. The cost of cable including installation is Rs. (20a + 20) per metre where a is the area of cross-section of the conductor in cm2. The cost of energy is 5P per kWh and interest and depreciation amount to 10%. The resistivity of the conductor material is 1.73 The most economical conductor size is
Question 4
Using grid of horizontally buried conductors A grounding system was formed which serves to dissipate the earth fault current, is called as -
Question 5
An RLC circuit with relevant data is given below.
The power dissipated in the resistor R is
Question 6
Calculate the value of unknown inductance measured by Hay’s bridge. Circuit elements are –
and supply angular frequency is 100 rad/sec –
and supply angular frequency is 100 rad/sec –
Question 7
A diode is working under the forward-biased region. If the applied voltage increases in magnitude, the depletion region will continue to decrease. The current through the diode will:
Question 8
A straight wire carrying a current of amperes is placed along the axis of a circular current-carrying coil. What is the force of interaction between the wire and the coil if a current of amperes flows in the coil? The radius of coil is metres.
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ESE & GATE EEGeneralMar 11ESE & GATE EE