Basics of Electrical Engineering (Paper 1)
1. An electric current is the
(A) flow of electrons.
(B) Opposition to electrons.
(C) Storage of charge.
(D) Ionization of atom.
2. What does a capacitor store?
(A) Current.
(B) Charge.
(C) Voltage.
(D) Power.
3. A capacitor block
(A) DC.
(B) AC.
(C) both AC and DC.
(D) None of the above.
4. An inductor blocks
(A) AC.
(B) DC.
(C) Both AC and DC.
(D) None of the above.
5. Power factor of direct current is
(A) zero.
(B) Lagging.
(C) Unity.
(D) Leading.
6. An instrument which detects electric current is known as
(A) induction meter.
(B) Watt meter.
(C) Galvanometer.
(D) None of these.
7. The substances which have a large number of free electrons and offer a low
resistance are called
(A) insulators.
(B) Inductors.
(C) Conductors.
(D) Semi-conductors.
8. Reciprocal of the conductance is called
(A) admittance.
(B) Resistance.
(C) Reluctance.
(D) Reactance
9. The cheapest plant in operation and maintenance is......
a. Steam power plant
b. Nuclear power plant
c. Hydro-electric power plant
d. None of the above
10. Pelton turbines are mostly........
A. Horizontal
B. Vertical
C. Inclined
D. None of the above
11. The function of a surge tank is........
A. To supply water at constant pressure
B. To produce surges in the pipe line
C. To relieve water hammer pressures in the penstock pipe
12. In India largest thermal power station is located at
a) Kota
b) Sarni
c) Chandrapur
d) Neyveli
13. Solar thermal power generation can be achieved by
a) using focusing collector or heliostats
b) using flat plate collectors
c) using a solar pond
d) any of the above system
14. A snubber circuit is used to
a) Limit the rate of rising in voltage across BJT
b) Limit the rate of rising in voltage across SCR
c) Limit the rate of rising in current across TRIAC
d) Limit the rate of rising in current across BJT
15. Which of the following are the applications of power electronics?
a) Battery charger
b) DC thermistor
c) PC’s power supply
d) All the above
16. Earthing is necessary to give protection against
a) Danger of electric shock
b) Voltage fluctuation
c) Overloading
d) High temperature of the conductors
17. The advantage of neutral earthing is
a) Freedom from persistent arcing grounds
b) Over voltages due to lightning can be discharged to earth
c) Simplified design earth fault protection
d) All of the above
18. The nuclear energy is measured as........
a) MeV
b) MW
c) Curie
d) None of the above
19. Which is not identical for an atom and its isotope
(a) mass number
(b) atomic number
(c) chemical properties
(d) position in periodic table
(e) all of the above
20. The function of the moderator in a nuclear is to........
a) Stop chain reaction
b) Absorb neutrons
c) Reduce the speed of neutrons
d) Reduce temperature