mmup electrical questions 01

Electrical Questions

MMUP Engineering

1)    The Manufacturing company gets material from 2 suppliers X & Y,

	Task	Task Nodes	Duration
	Procure material by X		2
	Procure material by Y	A	2
	Delivery of Material from X	B	7
	Delivery of Material from Y	B	11
	Assembly and Completion	C & D	2

If X delays the procurement of material by 2 days and company take 10 days to obtain the material, what shall be the delay(days) for product completion

a.    0

b.    1

c.     2

d.    3

2)    If an alternator is over excited :

a)    P.F is lagging.

b)    P.F is leading

c)    Is Unity

d)    Is zero Rejection of Noise

3)    The input impedance of cascade amplifier will :

a.    Same as input impedance of first

b.    Same as output of second.

c.     Same as the entire circuit

d.    Same as Stage before the last stage

4)    Rotor of Induction motor is rotating at synchronous speed, What is Torque?

a.            High

b.            Low

c.             Zero

d.            Infinity

5)    Define Power Factor?

a)    Sine of Voltage and Current

b)    Cosine of Voltage and Current

c)    Tan of Voltage and Current

6)    What is the minimum gauge size of the earthing cable

a)    20

b)    16

c)    10

d)    8

7)    If a metal is added to a semiconductor, which type if diode is formed

a.    Schottkey Diode

b.    Zener diode

c.     Tunnel Diode

d.    ……..

8)    In a construction firm the project manager has conducted the analysis for soil and has designed the frame and structural which has the budget of $25000. However he was told to bring down the budget to $20000. How can he manage it?

a.    He will change the soil analysis report and framing to bring down the budget with some effect on Specification

b.    He will carry out the soil analysis again to bring some better figures

c.     He will bring down the framing to an acceptable and within specification

d.    He will do (b) & (c) both

9)    Advantages of Cascading the amplifiers

a.    Input impedance

b.    Output impedance

c.     High Voltage gain

10) The system is maintained at 24V output voltage. The input source varies from 120V to 126V. while the output current varies from 0A to 5 A. What is the min power rating required for the diode.

a.    80W

b.    150W

c.     300W

d.    600W

11) Harmonics are produced due to

a.    Magnetic devices

b.    Electronic Power devices

12) If the signal is doubled at the input of the transmitter what shall be the db ot the output

a.    0.5db

b.    2db

c.     3db

d.    4db

13) The undergroung cable is laid in a marine environment at system voltage,A. what shall be the design of the cable insulation

a.    (1/√3) *A

b.    √3 * A

c.     √2 * A

d.    2 A

14) The series of cell combine to give output of 230V at no load. The rated output od 300V to provide the power of 2 MW. If the cell are used in standard battery, what is the internal resistenace of each battery.

a.    0.003

b.    0.05

c.     ……

15) Input ipedance of an inverted opamp

a.    High

b.    Low

c.     Infinite

d.    …..

16) Which has the highest conductivity at room temperature

a.    Aluminium

b.    Copper

c.     Gold

d.    Silver

17) What is the top cable used for on the transmission lines

a.    Ground

b.    Phase

c.     Neutral

d.    Transmission

18) What are the HRC fuses

a.    High Rupturing Capacity Fuse

b.    …..

c.     ….

19) Permanent magnet has the relative permitivity ___________ than air

a.    Higher

b.    Lower

c.     Same

d.    …..

20) Which shall be more sustainable for a the Project/Business

a.    Economical 

b.    Environmental 

c.     Society

d.    All the above