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

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
Switching
Routing
Linking

ANSWER DOWNLOAD EXAMIANS APP

MGVCL Exam Paper (30-07-2021 Shift 3)
Data Encryption Standard (DES) was designed by

None of these
Apple
Microsoft
IBM

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MGVCL Exam Paper (30-07-2021 Shift 3)
A 3 pF capacitor is charged by a constant current of 2 pA for six seconds. The voltage across the capacitor at the end of charging will be

8 V
6 V
2 V
4 V

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Equation know that the charge stored in a capacitor is given as:
Q = C*V
Q = I*t
V = (I*t)/C
= (2μ*6)/(3μ)
= 4 V

MGVCL Exam Paper (30-07-2021 Shift 3)
Nairobi negotiations are related to which of the following Organisation?

The United Nations Children's Fund
UNESCO
World Economic Forum
World Trade Organisation

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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
798 rpm
882 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)
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.

700 kVA
1050 kVA
1430 kVA
715 kVA

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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

MORE MCQ ON MGVCL Exam Paper (30-07-2021 Shift 3)

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