Ques:- In ups how can calculate the battery backup time
Asked In :-
Harrier Information Systems, saudi aramco,
Ques:- Difference between Relief valve & pressure reducing valve ? Can we use pressure reducing valve instead of pressure relief valve ?
Asked In :-
lsp,
Right Answer:
A relief valve is designed to open and relieve excess pressure from a system to prevent overpressure conditions, while a pressure reducing valve is used to lower and maintain a specific downstream pressure.
No, a pressure reducing valve cannot be used instead of a pressure relief valve, as they serve different purposes and operate under different conditions.
A relief valve is designed to open and relieve excess pressure from a system to prevent overpressure conditions, while a pressure reducing valve is used to lower and maintain a specific downstream pressure.
No, a pressure reducing valve cannot be used instead of a pressure relief valve, as they serve different purposes and operate under different conditions.
Ques:- What is ELCB?
Asked In :-
vision plus, lec,
Right Answer:
ELCB stands for Earth Leakage Circuit Breaker. It is a safety device used to prevent electric shock and electrical fires by detecting earth faults and disconnecting the circuit when leakage current is detected.
ELCB stands for Earth Leakage Circuit Breaker. It is a safety device used to prevent electric shock and electrical fires by detecting earth faults and disconnecting the circuit when leakage current is detected.
Ques:- What is a mapping in plc & dcs
Asked In :-
Walkover Web Solutions, SPARX IT SOLUTIONS, MedGenome Labs, sciative, Talent Toppers, KLA Tencor Software India, Bombay Softwares, BPSC, BYD Electronic, D-Mart,
Right Answer:
In PLC (Programmable Logic Controller) and DCS (Distributed Control System), mapping refers to the process of defining how input and output signals from field devices (like sensors and actuators) are assigned to specific addresses or variables in the control system. This allows the control system to correctly interpret and manage the data from these devices for monitoring and control purposes.
In PLC (Programmable Logic Controller) and DCS (Distributed Control System), mapping refers to the process of defining how input and output signals from field devices (like sensors and actuators) are assigned to specific addresses or variables in the control system. This allows the control system to correctly interpret and manage the data from these devices for monitoring and control purposes.
Ques:- What will be maximum output and input current of 1KVA & 2KVA UPS?
Ques:- Condider as 100 w lamps glowing . for completing a one unit how much time it should glow
Asked In :-
Sulzer Pumps,
Ques:- WHAR IS DIFFERENCE BETWEEN NOMINAL MIX & DESIGN MIX IN DETAIL
Asked In :-
PVC,
Right Answer:
Nominal mix refers to a fixed proportion of materials (cement, sand, aggregate) based on standard ratios, typically used for small-scale projects. Design mix, on the other hand, is a scientifically calculated proportion of materials based on specific project requirements, considering factors like strength, durability, and workability, and is used for larger or more critical structures.
Nominal mix refers to a fixed proportion of materials (cement, sand, aggregate) based on standard ratios, typically used for small-scale projects. Design mix, on the other hand, is a scientifically calculated proportion of materials based on specific project requirements, considering factors like strength, durability, and workability, and is used for larger or more critical structures.
Ques:- Why sodium lamp is used as source of Polarimeter?
Right Answer:
Sodium lamps are used as a source of light in polarimeters because they emit a single wavelength of light (589 nm), which provides a clear and consistent measurement of optical rotation.
Sodium lamps are used as a source of light in polarimeters because they emit a single wavelength of light (589 nm), which provides a clear and consistent measurement of optical rotation.
Ques:- What is the principal of flow transmeter,level trans meter,presser transmeter?
Asked In :-
jindal steel & power ltd.,
Right Answer:
Flow Transmitter: It measures the flow rate of a fluid by converting the flow velocity into an electrical signal, often using methods like differential pressure, electromagnetic, or ultrasonic principles.
Level Transmitter: It measures the level of a fluid in a tank or vessel by detecting the height of the fluid column, typically using methods such as hydrostatic pressure, ultrasonic, or radar technology.
Pressure Transmitter: It measures the pressure of a fluid and converts it into an electrical signal, commonly using strain gauges, capacitive, or piezoelectric sensors to detect pressure changes.
Flow Transmitter: It measures the flow rate of a fluid by converting the flow velocity into an electrical signal, often using methods like differential pressure, electromagnetic, or ultrasonic principles.
Level Transmitter: It measures the level of a fluid in a tank or vessel by detecting the height of the fluid column, typically using methods such as hydrostatic pressure, ultrasonic, or radar technology.
Pressure Transmitter: It measures the pressure of a fluid and converts it into an electrical signal, commonly using strain gauges, capacitive, or piezoelectric sensors to detect pressure changes.
Ques:- How to calculate rate analysis of M25 grade concrete
Asked In :-
burn manufacturing usa llc,
Right Answer:
To calculate the rate analysis of M25 grade concrete, follow these steps:
1. **Determine the Mix Ratio**: M25 concrete typically has a mix ratio of 1:1:2 (Cement: Sand: Aggregate).
2. **Calculate Material Quantities**: For 1 cubic meter of M25 concrete:
- Cement = 1 part = 0.4 m³
- Sand = 1 part = 0.4 m³
- Aggregate = 2 parts = 0.8 m³
3. **Convert to Weight**:
- Cement: 0.4 m³ × 1440 kg/m³ = 576 kg
- Sand: 0.4 m³ × 1600 kg/m³ = 640 kg
- Aggregate: 0.8 m³ × 1500 kg/m³ = 1200 kg
4. **Calculate Costs**:
- Cement cost per kg ×
To calculate the rate analysis of M25 grade concrete, follow these steps:
1. **Determine the Mix Ratio**: M25 concrete typically has a mix ratio of 1:1:2 (Cement: Sand: Aggregate).
2. **Calculate Material Quantities**: For 1 cubic meter of M25 concrete:
- Cement = 1 part = 0.4 m³
- Sand = 1 part = 0.4 m³
- Aggregate = 2 parts = 0.8 m³
3. **Convert to Weight**:
- Cement: 0.4 m³ × 1440 kg/m³ = 576 kg
- Sand: 0.4 m³ × 1600 kg/m³ = 640 kg
- Aggregate: 0.8 m³ × 1500 kg/m³ = 1200 kg
4. **Calculate Costs**:
- Cement cost per kg ×
Ques:- What is the different between gate valve and globe valve?
Asked In :-
Mahanagar Gas, Johns Hopkins Applied Physics Lab, commissioned corps of the u.s. public health service, marquardt india pvt. ltd, btl india private ltd,
Right Answer:
A gate valve is designed for fully open or fully closed positions, allowing minimal flow resistance when open, while a globe valve is used for regulating flow and provides better throttling capabilities but has higher flow resistance when open.
A gate valve is designed for fully open or fully closed positions, allowing minimal flow resistance when open, while a globe valve is used for regulating flow and provides better throttling capabilities but has higher flow resistance when open.
Ques:- What is working principle of ACB and VCB?
Asked In :-
gkn aerospace, toshiba transmission & distribution system,
Ques:- What is the hydra step level sensor output value( measuring level of steam drum)
Asked In :-
wurth electronics midcom,
Right Answer:
The Hydra step level sensor typically outputs a value in the range of 4-20 mA, which corresponds to the measured level of the steam drum.
The Hydra step level sensor typically outputs a value in the range of 4-20 mA, which corresponds to the measured level of the steam drum.
Ques:- What type of cables are used for f&G systems and detectors,what is the standard colour?
Asked In :-
Right Answer:
For fire and gas (F&G) systems and detectors, the cables used are typically low smoke zero halogen (LSZH) cables. The standard color for these cables is usually yellow.
For fire and gas (F&G) systems and detectors, the cables used are typically low smoke zero halogen (LSZH) cables. The standard color for these cables is usually yellow.
Ques:- In vortex flow meter how can measure the frequency ofvortex generated by vortex flow meter
Asked In :-
Sharda Motor industries,
Right Answer:
The frequency of vortices generated by a vortex flow meter is measured using a sensor, typically a piezoelectric or electromagnetic sensor, that detects the pressure fluctuations caused by the vortices as they pass by. The frequency is directly proportional to the flow velocity, allowing for flow rate calculation.
The frequency of vortices generated by a vortex flow meter is measured using a sensor, typically a piezoelectric or electromagnetic sensor, that detects the pressure fluctuations caused by the vortices as they pass by. The frequency is directly proportional to the flow velocity, allowing for flow rate calculation.
Ques:- What is RPI and NUT in controlnet networx. what happen if we are increase the NUT of controlnet networx?
Asked In :-
SWYM, Sify Technologies, Codelogicx Technologies, BillDesk, People Gamut HR Solutions, Jindal Aluminium, CETPA INFOTECH PVT, TriSys, NICE inContact, Techwave Consulting Inc,
Right Answer:
RPI (Requested Packet Interval) is the time interval at which a device sends data on a ControlNet network, while NUT (Network Update Time) is the maximum time allowed for the network to update all devices. If you increase the NUT, it can lead to longer delays in data updates across the network, potentially affecting real-time performance and responsiveness.
RPI (Requested Packet Interval) is the time interval at which a device sends data on a ControlNet network, while NUT (Network Update Time) is the maximum time allowed for the network to update all devices. If you increase the NUT, it can lead to longer delays in data updates across the network, potentially affecting real-time performance and responsiveness.
Ques:- What is the formula to convert from KVAr to current?
Asked In :-
Pedalheads Bike Camps, eaton, jindal steel & power ltd., aurizon, gb railfreight, diversco integrated services, semaconnect, philips optimum,
