MGVCL Exam Paper (30-07-2021 Shift 3)
A 10-pole induction motor is supplied by a 6-pole alternator, which is driven at 1400 rpm. If the motor runs with a slip of 5%, what is its speed?

1425 rpm
882 rpm
1575 rpm
798 rpm

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MGVCL Exam Paper (30-07-2021 Shift 3)
Which of the following statements are correct?
(i) Advanced metering infrastructure (AMI) is typically more automated and allows real- time, on-demand interrogations with metering endpoints.
(ii) An Automated Meter Reading (AMR) device only communicates from the customer to the energy supplier.
(iii) AMR meters only provide kWh information and possible peak kW demand for the month.

(i) and (iii) only
(i), (ii) and (iii)
(ii) and (iii) only
(i) and (ii) only

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MGVCL Exam Paper (30-07-2021 Shift 3)
Consider the following statements and choose the correct option.
Statement 1: DVR (Dynamic Voltage Restorer) is a series compensation device.
Statement 2: DVR protects sensitive electric load from power quality problems such as voltage sags, swells, unbalance and distortion through power electronic controllers."
Statement 2: In a synchronous motor, at no-load condition, and with normal excitation the armature current

Both Statement 1 and Statement 2 are FALSE
Both Statement 1 and Statement 2 are TRUE
Statement 1 is FALSE and Statement 2 is TRUE
Statement 1 is TRUE and Statement 2 is FALSE

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MGVCL Exam Paper (30-07-2021 Shift 3)
The current flowing in to a balanced delta connected load through line 'a' is 10 A when the conductor of line ’b’ is open. With the current in line 'a' as reference, compute the symmetrical components of the line currents. Assume the phase sequence of ’abc’.

Ia₀ = 0 A.Ia₁ = (-5 + j2.88) A.Ia₂ = (5 - j2.88) A.
Ia₀ = 10 A.Ia₁ = (-1.66 + j2.88) A.Ia₂ = (1.66 + j2.88) A.
Ia₀ = 0 A.Ia₁ = (-1.66 + j2.88) A.Ia₂ = (1.66 + j2.88) A.
Ia₀ = 10 A.Ia₁ = (-5 + j2.44) A.Ia₂ = (5 - j2.44) A.

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