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

MGVCL Exam Paper (30-07-2021 Shift 3)
The threshold voltage of an N-channel enhancement mode MOSFET is 0.5 V. When the device is biased at a gate voltage of 3 V, pinch-off would occur at a drain voltage of

1.5 V
3.5 V
4.5 V
2.5 V

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Equation is given by:
Vds = Vgs - Vt
Vds = 3 - 0.5
Vds = 2.5 V

MGVCL Exam Paper (30-07-2021 Shift 3)
Message ____ means that the data must arrive at the receiver exactly as sent.

None ot these
Confidentiality
Authentication
Integrity

ANSWER DOWNLOAD EXAMIANS APP

MGVCL Exam Paper (30-07-2021 Shift 3)
A 1000 kVA ONAN cooled transformer has a load of 500 kVA throughout the day except for a period of 2 hours. What is the permissible overload for a duration of two hours. Assume the permissible load kVA as a fraction of rated kVA is 1.43.

715 kVA
1050 kVA
700 kVA
1430 kVA

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Permissible overload for transformer = Full load kVA*factor for permissible overload
= 1000*1.43
= 1430 kVA

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

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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
882 rpm
1425 rpm
1575 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)
Arjuna Award is awarded for the excellence in which field?

Literature
Science
Sports
Mathematics

ANSWER DOWNLOAD EXAMIANS APP
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