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MGVCL Exam Paper (30-07-2021 Shift 3)

MGVCL Exam Paper (30-07-2021 Shift 3)
Arunachal Pradesh does not share its borders with which one of the following nations?

China
Myanmar
Bangladesh
Bhutan

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MGVCL Exam Paper (30-07-2021 Shift 3)
A single phase full converter bridge, connected to 230 V, 50 Hz source is feeding a load R =10 Ω in series with a large inductance that makes the load current ripple free. For a firing angle of 450, calculate the rectification efficiency.

76.66%
50.55%
63.66%
28.33%

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Rectification efficiency = DC output power/AC input power

MGVCL Exam Paper (30-07-2021 Shift 3)
The complex power injections at a bus are shown in figure Two lines connected drawing the powers as shown in figure. The complex power in the line-2 "S2" is

2+j5
2-j5
2-j1
2+j1

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Total power generate (Sg) = S1 + S2
S2 = Sg - S1
= 5 + 3j - 3 + 2j
= 2 + 5j

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?

798 rpm
1575 rpm
882 rpm
1425 rpm

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Slip of the induction motor,
S = (Ns - Nr)/Ns
Ns = (120*f)/P
Poles (P) = 6

1400 = (120*f)/6
f = 70 Hz
For P = 10
Ns = (120*70)/10
= 840 rpm
Nr = Ns(1 - S)
= 840*(1 - 0.05)
= 798 rpm

MGVCL Exam Paper (30-07-2021 Shift 3)
A group of computers and other devices connected together is called a network and the concept of connected computers sharing resources is called ____

Networking
Linking
Routing
Switching

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MGVCL Exam Paper (30-07-2021 Shift 3)
Choose the best option from the given alternatives which can be substituted for the given word/sentence.
Code of diplomatic etiquette and precedence

Sheath
Secular
Protocol
Wardrobe

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