IIT Hyderabad Electrical Supervisor Question Paper | IIT Hyderabad Junior Technician Electrical Model Paper
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IIT Hyderabad Junior Technician (Electrical Supervisor) 2021 Electrical Engineering
| 1 | Superposition theorem is valid for
(a) Linear circuits (b) Non linear circuits (c) Both linear and non linear circuits (d) Circuits with active elements |
| 2 | Norton’s theorem when applied to DC circuit results in
(a) A voltage source alone (b) A voltage source with a resistance in series (c) A current source with resistance in parallel (d) A current source alone |
| 3 | To determine the polarity of the voltage drop across a resistor, it is necessary to know
(a) Value of current through the resistor (b) Direction of current through the resistor (c) Value of resistor (d) E.m.fs in the circuit |
| 4 | For making armature and transform cores, the best suited magnetic materials should have _____permeability and _____ hysteresis loss
(a) High, high (b) Low, high (c) High, low (d) Low, low |
| 5 | An induced e.m.f is produced when a magnet is plunged into a coil. The strength of the induced e.m.f is independent of
(a) The strength of the magnet (b) Number of turns of coil (c) The resistivity of the wire of the coil (d) Speed with which the magnet is moved |
| 6 | A moving conductor coil produces in induced e.m.f This is in accordance with
(a) Lenz’s law (b) Faraday’s law (c) Coulomb’s law (d) Ampere’s law |
| 7 | A magnet is moved towards a coil; (i) quickly (ii) slowly, then the induced e.m.f is
(a) Larger in case (i) (b) Smaller in case (ii) (c) Equal to both the cases (d) Larger or smaller depending upon the radius of the coil |
| 8 | Two coils are placed closed each other. The mutual inductance of the pair of coils depends upon
(a) The rate at which currents are changing in the two coils (b) Relative position and orientation of two coils (c) The material of the wires of the coils (d) The currents in the two coils |
| 9 | The rms value of a sinusoidal ac current is numerically equal to its value at an angle of____________degrees
(a) 60 (b) 30 (c) 45 (d) 90 |
| 10 | The form factor of a sinusoidal wave form is
(a) 1.414 (b) 1.11 (c) 2 (d) 1.5 |
| 11 | For which of the following wave form the form factor is 1
(a) Sinusoidal (b) Triangular (c) Square (d) Half-wave rectified |
| 12 | In a moving coil instrument, the damping torque is developed by
(a) Air – friction (b) Eddy current (c) Gravity friction (d) Fluid friction |
| 13 | In a three phase system balanced star connected system, how many minimum watt-meters are sufficient to measure the total power?
(a) 4 (b) 2 (c) 1 (d) 3 |
| 14 | For measure a very high resistance we should use
(a) Kelvin’s double bridge (b) Wheatstone bridge (c) Meggar (d) Schering bridge |
| 15 | The sweep generator of a CRO is used to produce
(a) Sinusoidal voltage for the vertical deflection of electron beam (b) Saw tooth voltage for the horizontal deflection of electronic beam (c) Saw tooth voltage for the vertical deflection of electronic beam (d) Sinusoidal voltage for the horizontal deflection of electron beam |
| 16 | Which of the following best represents the area under the load curve?
(a) The average load on power system (b) Maximum demand (c) Number of units generated (d) Load factor |
| 17 | Which of the following is equal to the maximum demand?
(a) The ratio of area under curve to the total area of rectangle (b) The ratio of area under curve and number of hours (c) The peak of the load curve (d) The area under the curve |
| 18 | What is the demand factor?
(a) Ratio of connected load to maximum demand (b) Ratio of average load to connected load (c) Ratio of maximum demand to the connected load (d) Ratio of kilowatt hour consumed to 24 hours |
| 19 | In practice what is the value of diversity factor ?
(a) Less than Unity (b) Greater than Unity (c) Equal to or greater than Unity (d) Less than zero |
| 20 | This type of tariff is used for residential and small commercial consumers
(a) Two –part tariff (b) One-part tariff (c) Flat rate tariff (d) Block rate tariff |
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