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NHPC-JE’21 EE: Daily Practices Quiz 07-Oct-2021

NHPC JE Recruitment 2021

National Hydroelectric Power Corporation (NHPC) has released the recruitment notification for engagement of the following posts as Senior Medical Officer, Assistant Rajbhasha Officer, Junior Engineer & Sr. Accountant posts. NHPC expects applications from High Performing, Dynamic & Achievement-Oriented Professionals candidates to fill up these 173 vacancies.

NHPC-JE’21 EE: Daily Practices Quiz

NHPC-JE’21 EE: Daily Practices Quiz 07-Oct-2021

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

Q1. What is the maximum load that is permitted in a power circuit?
(a) 2000 watts
(b) 3000 watts
(c) 5000 watts
(d) 10000 watts

Q2. The purpose of starting winding in a single-phase induction motor is to
(a) Reduce losses
(b) Limit temperature rise of the machine
(c) Produce rotating flux in conjunction with main winding
(d) Increase losses

Q3. Which of the following motors is used in mixies?
(a) Repulsion motor
(b) Reluctance motor
(c) Hysteresis motor
(d) Universal motor

Q4. Synchronous impedance method of finding voltage regulation of an alternator is
called pessimistic method because
(a) It is simplest to perform and compute
(b) It gives regulation value higher than is actually found by direct loading
(c) Armature reaction is wholly magnetizing
(d) It gives regulation value lower than is actually found by direct loading

Q5. Which of the following motor is non-self-starting?
(a) Squirrel cage induction motor
(b) Slip ring induction motor
(c) Synchronous motor
(d) DC series motor

Q6. Kirchhoff’s voltage law is based on-
(a) Law of conservation of energy
(b) Law of conservation of charge
(c) Both a and b
(d) None

SOLUTIONS

S1. Ans.(b)
Sol. maximum load for lighting points circuit= 800 watts
Maximum load for power circuit= 3000 watts

S2. Ans.(c)
Sol. The purpose of starting winding in a single-phase induction motor is to produce rotating flux in conjunction with main winding.

S3. Ans.(d)
Sol. Universal motor is used in mixies.

S4. Ans.(b)
Sol. Synchronous impedance method of finding voltage regulation of an alternator is called pessimistic method because it gives regulation value higher than is actually found by direct loading.

S5. Ans.(c)
Sol. Synchronous motor is non-self-starting.

S6. Ans.(a)
Sol. KVL is based on conservation of energy.

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