Q.1 The group of electrical equipment or apparatus used to change characteristic of electric power is known as__
    A. Generating station
    B. Sub station
    C. Utilizing system
    D. all of the above
Ans.: B

Q.2 Which of the following quantity is/ are change in sub stations?
    A. Voltage
    B. AC to DC
    C. frequency
    D. all of the above
Ans.: D

Q.3 Which of the following points must be kept in view while designing or layout a substation?
    A. It should be located at proper site
    B. It should be easily operated
    C. It should involved minimum initial cost
    D. It should provide safe and reliable arrangement
    E. all of the above
Ans.: E

Q.4 Classification of substation can be
    A. according to service requirement
    B. According to constructional features
    C. Both A and B
    D. neither A nor B
Ans.: C

Q.5 According to service requirement a substation can be classified
    A. Switching and Transformer substation
    B. converting and frequency changer substation
    C. P.F correction substation
    D. all of the above
Ans.: D

Q.6 According to constructional feature a substation can be classified as
    A. Outdoor substation
    B. Indoor substation
    C. Pole mounted substation
    D. Underground substation
    E. all of the above
Ans.: E

Q.7 Which of the following advantages of outdoor substation over indoor substation?
    A. less time require for erection
    B. low capital cost
    C. easy in future expansion
    D. all of the above
Ans.: D

Q.8 A substations in a power system used for changing voltage level is known as
    A. Transformer substation
    B. potential transformer
    C. Protection transformer
    D. none of the above
Ans.: A

Q.9 Transformer substation cab be classified into__
    A. step up substation
    B. Step down substation
    C. Both A and B
    D. Pole and Plinth mounted substation
Ans.: C

Q.10 Step up substation is
    A. step up the voltage level for transmission
    B. located at generating station
    C. either A or B
    D. Both A and B
Ans.: D

Q.11 Primary grid type substation is ____substation
    A. step down type
    B. step up type
    C. distribution type
    D. none of the above
Ans.: B

Q.12 In step up substation the electric power is transmitted by____
    A. 3-phase 3 wire system
    B. 3-phase 4 wire system
    C. 2-phase 3 wire system
    D. 2-phase mid-point earthed system
Ans.: A

Q.13 Primary substation is generally__
    A. Indoor type
    B. outdoor type
    C. pole mounted type
    D. any of the above
Ans.: B

Q.14 Electric power received by the primary grid substation at receiving end which is reduces the voltage level of 66 KV for__
    A. primary distribution purpose
    B. secondary transmission purpose
    C. secondary distribution purpose
    D. primary transmission purpose
Ans.: B

Q.15 The generating voltage at generating station is step up for transmission is___
    A. 11KV
    B. 66KV
    C. 33KV
    D. any of the above
Ans.: A