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22nd December 2016, 09:26 AM
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| Re: Technical Lecturer RPSC
The Technical Lecturer exam is conducted by RPSC. The RPSC is conducting body of Technical Lecturer RPSC exam.   PDF of question papers for Technical Lecturer post by RPSC: Question papers for Technical Lecturer post by RPSC: Lect Electrical Engg 1) The stator of a 415V, 50 Hz, 4-pole slip ring Induction Motor is excited by rated frequency with slip rings open circuited. The rotor is made to rotate at a speed of 600 rpm in the opposite direction to the normal direction, The frequency of induced voltage across slip ring is A) 30 Hz B) 70 Hz C) 20 Hz D) 35 Hz 2) A DC shunt motor has rated rpm of 480. Certain industrial application requires this motor to run at 540 rpm for some time. Which speed control will be desirable? A) Ward Leonard control B) Armature current control C) Field resistance control D) It is not possible to run the motor at more than the rated rpm 3) A single phase transmission line consists of two parallel conductors one meter apart and 1.25 cm in diameter. The loop inductance per km of the line is: A) 21.3 x 10-4 Henry/ km B) 34.3 x 10-7 Henry/ km C) 11.5 x 10-7 Henry/ km D) 19.5 x 10-7 Henry/ km 4) Capacitance grading of cable implies A) grading according to capacitance of cables per kilometer length B) cables using single dielectric in different concentrations C) use of dielectrics of different permeabilities D) capacitance required to be introduced at different length to counter the effect of inductance 5) One out of the following statements is not true: A) The curl of gradient of any scalar field is identically zero B) The divergence of curl of any vector field is identically zero C) A field, which has zero divergence, is said to be solenoidal D) A field, whose curl is zero, is said to be rotational 6) In a loss-free R-L-C circuit the transient current will be: A) Oscillating B) Non-oscillating C) Sinusoidal wave D) Square wave Set Id : 25_8 7) Which statement out of the following is a wrong statement with regard to Induction motor? A) Auto-transformer starter is costlier to “direct on line” (DOL) starter B) DOL starter is used for motors up to 5 horse power only C) Auto transformer starter is used for motors up to 20 horse power only D) Star delta starter connects the motor first in delta at the time of starting then in star for running 8) In the measurement of power of balanced load by two wattmeter method in a 3-phase circuit, The readings of the wattmeters are 4 kW and 2 kW respectively, the later is being taken after reversing the connections of current coil. the power factor and reactive power of the load is A) 0.2 & 6 kVAR B) 0.2 & 6 √3 kVAR C) 0.32 & 2 kVAR D) 0.32 & 2 √3 kVAR 9) The RMS value of a half-wave rectified current is 10 Ampere. Its value for full-wave rectification would be: A) 10 Ampere B) 14.14 Ampere C) 31.4 Ampere D) 20 Ampere 10) One of the following does not represent a valid combination of ‘Class’ of insulating material and its limiting temperature in 'Degree Centigrade'. A) ‘Class- A’ – 1050C B) ‘Class- F’ – 1550C C) ‘Class- H’ – 1800C D) ‘Class- B’ – 1200C |