CPCL Workmen Electrical Sample Question Paper
Chennai Petroleum Corporation Limited Junior Engineering Assistant electrical exam will be conducted on 08th May 2022 . You may download your CPCL Junior Engineering Assistant Hall Ticket between 02 nd May 2022 to 8th May 2022 from official website cpcl.co.in Here we are providing Junior Engineering Assistant Electrical model paper for your ready reference.
| 1 | Ohm’s law is applicable to
(a) Semi-conductors (b) Vacuum tubes (c) Electrolytes (d) Semiconductors and Vacuum tubes |
| 2 | The resistance between the opposite faces of 1 m.cube is found to be be 1 Ohm. If its length is increased to 2 m, with its volume remaining the same, then its resistance between the opposite faces along its length is
(a) 2 Ohm (b) 4 Ohm (c) 1 Ohm (d) 8 Ohm |
| 3 | Three resistances of 3 Ohm each are connected in delta. The value of the resistances in the equivalent star is in Ohm
(a) 27 (b) 9 (c) 1.5 (d) 1 |
| 4 | Thevenin’s theorem can be applied to network containing
(a) Passive elements only (b) Active elements only (c) Linear elements only (d) All of these |
| 5 | A floating battery is one
(a) in which battery voltage is equal to charger voltage (b) in which the current in the circuit is fully supplied by battery (c) which gets charged and discharged simultaneously (d) which supplies current intermittently and also during off cycle gets charged |
| 6 | Which of the following statements is not correct?
(a) A primary cell is an electro-chemical cell (b) After charging, a primary cell can be again put to use (c) Dry cell is a primary cell (d) Leclanche cell is used in experiments, where constant supply of current is not needed. |
| 7 | The efficiency of a solar cell can be expected in the range
(a) 10 to 15 percent (b) 25 to 30 percent (c) 45 to 60 percent (d) 70 to 80 percent |
| 8 | A 10 kW electric motor drives a vehicle at an average speed of 50 km/hr Ten, 12 V, 100A-h batteries supply the motor, the maximum distance that the vehicle may travel before the batteries must be recharged, will be
(a) 30 Km (b) 45 Km (c) 60 Km (d) 80 Km |
| 9 | A power factor of incandescent bulb is
(a) 0.8 lagging (b) 0.8 leading (c) Unity (d) Zero |
| 10 | Impulse response of an R-L circuit is a
(a) Rising exponential function (b) Decaying exponential function (c) Step function (d) Parabolic function |
| 11 | In a network containing resistances and reactances the roots of the characteristic equation give for the circuit
(a) The forced response (b) The total response (c) The natural response (d) The damped response |
| 12 | Which of the following is an example of an open loop system ?
(a) Household refrigerator (b) Respiratory system of an animal (c) Stabilization of air pressure entering into a mask (d) Execution of a program by a computer |
| 13 | The electric field lines and equipotential lines
(a) are parallel to each other (b) are one and the same (c) cut each other orthogonally (d) can be inclined to each other at any angle |
| 14 | The most stable primary atomic standard for frequency is
(a) Caesium beam standard (b) Hydrogen maser standard (c) Quartz standard (d) Rubidium vapour standard |
| 15 | The material of wires used for making resistance standards is usually
(a) Maganin (b) Nichrome (c) Copper (d) Phosphor Bronze |
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