PSPCL-JE’21 EE: Daily Practices Quiz 29-Oct-2021

PSPCL RECRUITMENT 2021

Punjab State Power Corporation Ltd. (PSPCL), a power generating and distributing company of the Government of Punjab state, has released the notification for recruitment to the post of Clerk, Revenue Accountant, Junior Engineer (Electrical), Assistant Lineman & Assistant Sub Station Attendant Posts.
A total of 75 vacancies have been announced for the recruitment process of JE ELECTRICAL Engineering.

Exam Dates: 10 N0V-21 to 17 Nov-21

PSPCL-JE’21 EE: Daily Quiz

PSPCL-JE’21 EE: Daily Practices Quiz 29-Oct-2021

Each question carries 1 mark.
Negative marking: 1/4 mark
Total Questions: 06
Time: 06 min.

Q1. In parallel combination of resistance, the voltage is _________.
(a) lower across largest resistance
(b) higher across largest resistance
(c) same across each resistance
(d) higher across smaller resistance

Q2. Electrical conductivity of a conductor is measure in __________.
(a) Siemens
(b) Ohms
(c) Siemens/meter
(d) Ohms/meter

Q3. A D.C. Generator has 6 poles, A brush shift of 6° actual means a brush shift of
(a) 6° electrical
(b) 18° electrical
(c) 30° electrical
(d) 2° electrical

Q4. Full-load terminal voltage in an over-compounded generator with respect to no-load terminal voltage is–
(a) equal
(b) zero
(c) less
(d) more

Q5. Total number of poles and slots in a DC machine are 4 and 8 respectively. Angular slot pitch is ……….
(a) 45 electrical degrees
(b) 90 electrical degrees
(c) 135 electrical degrees
(d) 180 electrical degrees

Q6. Which is the most severe fault?
(a) phase to phase fault
(b) phase to earth fault
(c) Three phases to ground fault
(d) Phase to phase to earth fault

SOLUTIONS

S1. Ans.(c)
Sol. In parallel combination of resistance, the voltage is same across each resistance.
i.e., V_1=V_2=⋯=V

S2. Ans.(c)
Sol. The electric conductivity is the measure the ability of a conductor to conduct electricity.
The conductivity formula is the inverse of the resistivity that is:
σ=1/ρ
Here
σ = refers to the electrical conductivity
ρ = refers to the resistivity
The conductivity unit is Siemens per meter.

S3. Ans.(b)
Sol. (θele= P/2×θmech )
= (6/2)×6
= 18° electrical

S4. Ans.(d)
Sol.

so, for over compound full load terminal voltage will be more than NoA-load voltage.

S5. Ans.(b)
Sol. Slots per pole =8/4=2
Angular slot pitch = (180°)/(slots per pole )
=(180°)/2
=90° (electrical)

S6. Ans.(c)
Sol. LLLG or three – phase to ground fault is most severe and in this short-circuit current value is maximum.
Severity of fault.
LLLG > LLL > LLG > LL > LG

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