Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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Engineering Interview Questions

Questions Answers Views Company eMail

we have require a Motor (1500kW, 6.6kV, 50Hz) which shall operate at 1500rpm during 30min and after it shall run on 500rpm during 15min. The same cycle shall be repetitive during the whole working days. Which method is best and economic to achieve such type of task. VFD, VVFD, Pole changing motor etc.

MTN,

1920

when liquid stored in spherical vessel,equilibrium shift towards liquid.what is the benefit of it?

1 4305

Why we generate power at multiple of 11 i.e 11kv,33kv etc.

DTV Solutions, Havells, TCS,

9 22859

what is p11

5 11236

what are software interrupts present in 8051 Microcontroller? Only Software interrupts//////

2824

What is the reason for not giving very High Proportional Gain Kp in PID Controller?

ABB,

2 7968

What is the basic difference between Modbus and CAN Open Protocols

6450

how does commutator convert a.c to d.c?

NRSC National Remote Sensing Centre, RBC,

2204

what is the actual difference betwen constructional details and constructional features?

2 4136

how the 3phase induction motor is running in 2phase supply with help of capacitor?

1 4104

What is Modulation and Demodulation?

7 10395

Why we are using -48v in equipments?

1 3744

Why dc supply is used for closing and tripping coil of ht breakers. What happen if we use only ups ac supply only.

ACC, JLL, ZETDC,

12 41317

what is freshnal Zone?

1 3956

How much losses in microwave Link?

1993

Un-Answered Questions { Engineering }

why do we not use equivalent voltage source in negative sequence equivalent ckt.

2051

What are the internal and external faults?

1111

A ii kv 1200 A Breaker combination fixed in a cubicle. How many ampere Fuse is required? If fuse is not using, Why?

1989

What are the primary differences between fixed-wing aircraft and rotary-wing (helicopter) aircraft in terms of design and aerodynamics?

609

how much quantity of 1.5" nails and 2.5" nails are required for conventional formwork shuttering?

1680

What is the loss of transformer of 220kv/11kv, 63/80 MVA and 18.05% impedance

2001

Which ratio use for cement selery???

1935

Please help me regarding my one concern. - During earth pit testing we noticed that the Clean earth pit and dirty earth pit showing continuity (Resistance value - 5ohm) . I want to know that if both earth pit have separate location and there is not internal looping between PIT then why such continuity is showing on it . Because of this issue the field side all earthing point showing short. In PLC panel we are providing two types of earthing cable which is coming from separate earth pit (Clean and Dirty earth pit) because of earth PIT showing short our PLC is not complying spec . please help regarding this issues.

1593

Define wet bulb globe temperature?

1069

Explain zener breakdown?

1174

If rotor works in clock wise what happens

1910

Explain what are edge triggered flip flop and level triggered flip flop? How do they differ from one another?

1143

state and explain that the vibration are transmitted from elastic materials or components to another?

4934

In which of the following case, the rotating magnetic field is reversed? A regenerative breaking B plugging C dynamic breaking D forward motoring

1975

what is basic difference betmeen normal & flame proof motor??

2193

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