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UPPCL RECRUITMENT 2021
Uttar Pradesh Power Corporation Limited has rolled out the official notification for the recruitment of Assistant Engineers and Junior Engineers for a total of 286 UPPCL Vacancy 2021. The Online submission of the application form for UPPCL Recruitment 2021 starts on 12th November 2021 and the last date to apply for the same is 2nd December 2021.
UPPCL-JE’21 EE: Daily Practices Quiz
UPPCL-JE’21 EE: Daily Practices Quiz 12-NOV-2021
Each question carries 1 mark.
Negative marking: 1/4 mark
Total Questions: 06
Time: 06 min.
Q1. Which method is used for transferring the power through an auto transformer?
(a) Mutual coupling
(b) Induction
(c) Conduction
(d) Induction and conduction
Q2. The no-load current drawn by a transformer is usually ……… of the full-load current.
(a) 15 to 20 percent
(b) 2 to 5 percent
(c) 0.2 to 0.5 percent
(d) 10 to 15 percent
Q3. In which of the following starters is No Volts Coil (NVC) connected in series with the field coil?
(a) Two-point starters
(b) Five-point starters
(c) Three-point starters
(d) Four-point starters
Q4. ……is an example of a passive transducer.
(a) Piezoelectric
(b) Thermocouple
(c) Electromagnetic pickup
(d) Linear variable differential transformer (LVDT)
Q5. A dc series motor drawing an armature current of I_a is operating under saturated magnetic conditions, torque developed in the motor is proportional to
(a) 1/Ia
(b) 1/Ia^2
(c) Ia^2
(d) Ia
Q6. Fusing factor of fuse is always
(a) More than 1
(b) Less than 1
(c) Infinity
(d) Zero
SOLUTIONS
S1. Ans.(d)
Sol. In an autotransformer, power is transferred through both conduction and induction processes.
For 3-phase Transformer, power is transferred through induction only.
S2. Ans.(b)
Sol. 2 – 5 %.
S3. Ans.(c)
Sol. The handle is held in RUN position by an electromagnet energized by a no-volt trip coil (NVC). This no-volt trip coil is connected in series with the field winding of the motor.
S4. Ans.(d)
Sol.
Active transducer: Piezoelectric, thermocouple, PV cell.
Passive transducer: LVDT
S5. Ans.(d)
Sol. We know Torque Tα ΦIa, As the motor is operating under saturation condition so torque will be independent of flux i.e., T α Ia.
S6. Ans.(a)
Sol. Fusing factor=(minimum fusing current)/(current rating of fuse)
Fusing factor of fuse is always >1.
