Test Your Knowledge - Free MCQ PRACTICE
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DRIVINGTEST
A fresh set of 20 random questions is generated every time you open this page and every time you refresh it.
For each of the following multiple choice questions, choose the most appropriate answer :

1. For high head and low discharge, water turbine used is :
A. Pelton wheel
B. Kaplan turbine
C. Francis turbine
D. Propeller turbine

2. What is the maximum load that can be connected in a circuit connecting only lighting points?
A. 500 watts
B. 750 watts
C. 800 watts
D. 1000 watts

3. Main drawback of electric drive is that :
A. It is cumbersome drive
B. It is costlier in initial as well as maintenance cost
C. Electric power supply failure makes the drive standstill
D. All these

4. Quantities are digitised using :
A. D/A converter
B. oscillator
C. amplifier
D. A/D converter

5. Main purpose of oil in OCB is to :
A. Provide insulation
B. Provide cooling of contacts
C. Quenching arc
D. None of these

6. Which conduits are used for protecting cable ends connected to a vibrating machine inter connection between switch gear and distribution boards?
A. Rigid steel conduits
B. Rigid non-metallic conduits
C. Flexible conduits
D. TRS wiring

7. In 2’s complement representation the number 11100101 represents the decimal number ……………
A. +37
B. -31
C. +27
D. -27

8. A synchronous motor is switched on to supply with its field windings shorted on themselves. It will
A. not start
B. start and continue to run as an induction motor
C. start as an induction motor and then run as synchronous motor
D. bum immediately

9. The commutator in dc machine works as
A. mechanical rectifier
B. mechanical inverter
C. energy converter
D. A and B

10. All rotation electrical machines have
A. Rotating armature and fixed field
B. Rotating field and fixed armature
C. A and B
D. None of these

11. A carry look ahead adder is frequently used for addition because
A. it costs less
B. it is faster
C. it is more accurate
D. uses fewer gates

12. Total flux required in any lighting scheme depends inversely upon :
A. Surface area
B. Space height ratio
C. Illumination
D. Coefficient of utilization

13. The binary number 10101 is equivalent to decimal number …………..
A. 19
B. 12
C. 27
D. 21

14. Which switch is incorporated in a circuit to keep the lamps in the OFF position irrespective of the position of the individual switches?
A. One way centre OFF
B. Master OFF
C. Two- way centre off switch
D. None of these

15. The generator develops an electric pressure by ?
A. Conversion of heat
B. Conversion of light
C. Electro-magnetic induction
D. Conversion of chemical energy

16. The value of load angle ? and the internal machine angle ? for maximum power developed in synchronous motor is equal to
A. 0°electrical, 0° electrical
B. 0° electrical, 90° electrical
C. 90° electrical, 0° electrical
D. 90° electrical, 90° electrical

17. What are the minimum requirements to cause the flow of current?
A. A voltage source and a conductor.
B. A voltage source, a conductor and an insulator.
C. A voltage source, a switch and a resistor.
D. A conductor, an insulator and a resistor.

18. The types of internal wiring used in domestic installations are :
A. Cleat wiring
B. CTS / RTS wiring
C. Metal / PVC conduit wiring
D. All the above

19. Armature winding of a series motor is excited
A. Resistively
B. Conductively
C. Inductively
D. None of these

20. Average resistance of human body is :
A. 500 ohms
B. 1000 ohms
C. 1500 ohms
D. 2000 ohms

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