Model question set 5 for NEA, NTC, CAAN

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Loksewa aayog tayari model question set 5

Multiple Choice Question
Each question has equal 1 mark.

1. Conductivity is the reciprocal of
a. current density
b. resistivity
c. resistance
d. none
2. One coulomb of charge is equal to
a. 6.25 x 10¹⁶ electrons
b. 625 x x 10¹⁶ electrons
c. 62.5 x x 10¹⁶ electrons
d. 62 x x 10¹⁶ electrons
3. A chock coil is a coil having
a. low L and high R
b. high L and high R
c. low L and low R
d. high L and low R
4. A single phase induction motor employs
a. squirrel cage rotor
b. wound rotor
c. either squirrel or wound rotor
d. none
5. Low speed alternator are driven by
a. steam engines
b. steam turbines
c. hydraulic turbines
d. none
6. Fraction loss and iron loss of an alternator can be measured by
a. transformer
b. DC motor
c. rectifier
d. none
7. Generally, the size of synchronous motor is determined by
a. KVA rating
b. KVAR rating
c. KW rating
d. none
8. kWh equals
a. 860 kcal
b. 610 kcal
c. 520 kcal
d. 746 kcal
9. The cost of fuel transportation is minimum for
a. diesel power plant
b. thermal power plant
c. hydroelectric power plant
10. The primary distribution of electric power is done by
a. 3-Φ, 3 wire system
b. 3-Φ, 4 wire system
c. 1-Φ system
d. none
11. In overhead transmission line, the sag depends on
a. conductor material
b. tension in conductor
c. height of tower
d. all
12. In DC transmission, the skin effect is
a. large
b. small
c. depends on voltage
d. zero
13. The loads on 3 phase, 4 wires distribution are
a. unbalanced
b. balanced
c. either a or b
d. none
14. Which one is correct?
a. 1+a+a² = 0
b. a+a² = 0
c. a+a² = 1
d. none
15. Merz-price protection is a type of
a. distance protection
b. differential protection
c. both a and b
d. none

Answer are as follows

1. Conductivity is the reciprocal of
b. resistivity
2. One coulomb of charge is equal to
b. 625 x x 10¹⁶ electrons
3. A chock coil is a coil having
d. high L and low R
4. A single phase induction motor employs
a. squirrel cage rotor
5. Low speed alternator are driven by
c. hydraulic turbines
6. Fraction loss and iron loss of an alternator can be measured by
b. DC motor
7. Generally, the size of synchronous motor is determined by
a. KVA rating
8. 1 kWh equals
a. 860 kcal
9. The cost of fuel transportation is minimum for
c. hydroelectric power plant
10. The primary distribution of electric power is done by
a. 3-Φ, 3 wire system
11. In overhead transmission line, the sag depends on
d. all
12. In DC transmission, the skin effect is
d. zero
13. The loads on 3 phase, 4 wires distribution are
a. unbalanced
14. Which one is correct?
a. 1+a+a² = 0
15. Merz-price protection is a type of
c. both a and b