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3rd September 2014, 09:14 AM
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IES Electrical Exam Question Paper
Will you please provide the Question Paper of IES Electrical Exam?
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#2
3rd September 2014, 10:25 AM
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Re: IES Electrical Exam Question Paper
Here is the list of few questions of IES Electrical Exam for your idea. 1. A set of independent current measurements taken by four observers was recorded as: 117.02 mA, 117.11 mA, 117.08 mA and 117.03 mA. What is the range of error? a. ± 0045 b. ± 0054 c. ± 0065 d. ± 0056 2. The reference voltage and the input voltage are sequentially connected to the integrator with the help of a switch in a a. Successive approximation A/D converter b. Dual slope integration A/D converter c. Voltage to time converter d. Voltage to frequency converter 3. A single channel digital storage oscilloscope uses a 12 bit, 108 samples/s ADC. For a 10 kHz sine wave input, what is the number of samples taken per cycle of input? a. 1012 b. 108 c. 104 d. 102 4. Consider the signal: Vm sin 100t + 2 Vm sin 200t to be sampled and stored in a data acquisition system. The same is to be extracted off-line later on. In order to extract the signal effectively, the original sampling frequency has to be a. 100 rad/s b. 200 rad/s c. 210 rad/s d. 2 2 100 200 + rad/s 5. Which one of the following transmission systems for telemetry has largest bandwidth? a. FM/FM radio transmission system b. Co-axial copper cables transmission system c. Fibre-optic data transmission system d. Synchro-position repeater system 6. Why are dummy strain gauges employed? a. For calibration of strain gauges b. For increasing the sensitivity of the bridge c. For compensation of temperature variations d. For neutralizing the influence of bridge voltage supply variations 7. Match List I (Type of DVM) with List II (Sub-component in ADC) and select the correct answer using the codes given below the lists: List I A. Ramp type B. Dual-slope C. Servo-type D. Successive approximation List II 1. DAC 2. Voltage to time converter 3. Pulse-generator 4. Potentiometer 5. Capacitor Codes; A B C D a. 2 1 4 5 b. 4 5 3 1 c. 2 5 4 1 d. 4 1 3 5 8. In modern electronic multi meter a FET or MOSFET is preferred over BJT because a. Its input resistance is low b. Its input resistance is high c. Its input resistance is high and does not vary with the change of range d. It is cheaper \9. Which of the following bridges can be used for inductance measurement? 1. Maxwell’s bridge 2. Schering bridge 2. Wein bridge 4. Hay’s bridge 3. Wheatstone bridge Select the correct answer using the codes given below a. 1 and 2 b. 2 and 3 c. 3, 4 and 5 d. 1 and 4 10. Match List I (Frequency) with List II (Detector) and select the correct answer using the codes given below the lists List I A. Zero frequency B. 50 Hz C. 1200 Hz D. 10 kHz List II 1. Head phone 2. D’Arsonval galvanometer 3. Cathode ray oscilloscope 4. Vibration galvanometer 5. Ballistic galvanometer Codes; A B C D a. 2 1 5 3 b. 3 4 1 2 c. 2 4 1 3 d. 3 1 5 2 11. Which of the following factors decide the accuracy in a bridge measurement? 1. Accuracy of the null indicator 2. Accuracy of the bridge components. 3. Sensitivity of the null indicator. 4. Applied voltage to the bridge system. Select the correct answer using the code given below a. 1 and 2 b. 2 and 3 c. 3 and 4 d. 1 and 3 12. Match List I (Material Used in Instruments) with List II (Purpose) and select the correct answer using the code given below the lists: List I A. Phosphor-bronze B. Manganin C. Aluminium D. Eureka List II 1. Coils 2. Discs 3. Control Springs 4. Shunts 5. Multipliers Codes; A B C D a. 3 5 2 4 b. 2 4 1 5 c. 3 4 2 5 d. 2 5 1 4 13. Match List I (type of Electronic Voltmeter) with List II (Major Characteristic) and select the correct answer using the code given below the lists: List I A. Amplifier-rectifier B. Rectifier-amplifier C. True R.M.S. D. Logarithmic List II 1. Wide input-signal dynamic range 2. High sensivity, limited bandwidth 3. Limited sensivity, large bandwidth 4. Capability to read non-sinusoidal ac Codes; A B C D a. 4 1 2 3 b. 2 3 4 1 c. 4 3 2 1 d. 2 1 4 3 14. What is the effect of inductance in the pressure coil on performance of a dynamometer type wattmeter? a. It reads low on lagging power factor and high on leading power factor b. It reads high on lagging power factor and low on leading power factor c. Its reading is not affected at all d. It always reads low 15. To measure 5 volts, if one selects a 0 - 100 volt range voltmeter which is accurate within ± 1%, then the error in this measurement may be up to a. ± 1.5% b. ± 2.5% c. ± 7.5% d. ± 20% 16. Consider the following statements with regard to the bandwidth of a closed-loop system: 1. In systems where the low frequency magnitude is 0 dB h the Bode diagram, the bandwidth is measured at the -3dB frequency. 2. The bandwidth of the closed loop control system is a measurement of the range of fidelity of response of the system. 3. The speed of response to a step input is proportional to the bandwidth. 4. The system with the larger bandwidth provides slower step response and lower fidelity ramp response. Which of the statements given above are correct? a. 1, 2 and 3 b. 1, 2 and 4 c. 1, 3 and 4 d. 2, 3 and 4 17. Consider the following statements: A first order system with a proportional controller exhibits an offset to a step input. In order to reduce the offset, it is necessary to 1. Increase the gain of proportional controller. 2. Add a derivative mode. 3. Add an -integral mode. Select the correct answer using the code given below a. 1, 2 and 3 b. 1 and 2 c. 2 and 3 d. 1 and 3 18. Match List I (Nyquist Plot of Loop Transfer Function of a Control System) with List II (Gain Margin in dB) and select the correct answer using the code given below the Lists List I A. Does not intersect the negative real axis B. Intersects the negative real axis between 0 and (-1, jo) C. Passes through (-1, jo) D. Encloses (-1, jo) List II 1. > 0 2. ∞ 3. < 0 4. 0 Codes; A B C D a. 2 4 1 3 b. 3 1 4 2 c. 2 1 4 3 d. 3 4 1 2 19. Which one of the following is the steady state error of a control system with step error, ramp error and parabolic error constants kp, kv and ka respectively for the input (1 - t2) μ(t)? a. 3 3 1 2 p a k k − + b. 3 6 1 2 p a k k + + c. 3 3 1 2 p a k k − + d. 3 6 1 2 p a For more questions , here is the attachment |