Electrical Engineering

(a) none.

(b) dc and ac both.

(c) ac.

(d) dc.

True

False

(a) all.

(b) of good mechanical properties of PVC.

(c) PVC is less costly.

(d) PVC is inert to oxygen and almost inert to oils and to many alkalines and acids.

(a) 13.2 kV.

(b) 11kV.

(c) 9.9kV.

(d) 6.6kV.

(a) transformation of voltage is possible in case of ac only.

(b) less insulation is required in case of ac.

(c) conductor of smaller x-section is required in case of ac in comparison to dc for carrying the same current.

(d) the construction cost per kW of ac generator is lower than that of dc generator.

(a) frequency.

(b) voltage and current.

(c) current.

(d) voltage.

True

False

(a) none.

(b) the stiffness of the bonds it makes with neighbours.

(c) crystal heat content.

(d) crystal temperature.

(a) service points to consumer premises.

(b) distribution transformer to consumer premises.

(c) step down transformer Station to service transformer banks.

(d) generating station to a switching station /step down transformer Station.