In which of the following areas can GPS technology be used? 1. Mobile phone operations 2. Banking operations 3. Controlling the power grids Select the correct answer using the code given below:

Updated 11 Apr 2026 · From UPSC Prelims GS Paper I 2018, Q90

Contents18
UPSC Prelims GS2018Science and Technology
  1. A1 only
  2. B2 and 3 only
  3. C1 and 3 only
  4. D1, 2 and 3
Show answer

Answer: (D) 1, 2 and 3

Correct Answer: (d) 1, 2 and 3

All three areas use GPS technology:

  1. Mobile phone operations — CORRECT: GPS is fundamental to mobile phones. It enables location services, navigation apps (Google Maps), ride-hailing (Uber/Ola), food delivery, and location-based advertising.

  2. Banking operations — CORRECT: Banks use GPS for various purposes like tracking ATM locations, geo-tagging transactions for fraud detection, and enabling location-based banking services.

  3. Controlling power grids — CORRECT: This might surprise you, but GPS is crucial for power grids. Power grids need extremely precise time synchronization to manage electricity flow. GPS satellites provide this precise timing, helping grid operators coordinate power generation and distribution across vast networks.

GPS technology has 5 major application areas:

  • Location (determining position)
  • Navigation (getting directions)
  • Tracking (monitoring movement)
  • Mapping (creating maps)
  • Timing (precise time synchronization)

REMEMBER: GPS is not just for maps and navigation. It's used in banking (fraud detection), power grids (time synchronization), agriculture, disaster management, and many more fields. If in doubt, GPS probably applies!

Why this was asked

GPS provides precise timing synchronization needed for power grid operations, not just location services for phones and maps.

UPSC tests whether students understand GPS has five major applications: location, navigation, tracking, mapping, and timing - with timing being the most overlooked.

Students typically miss that banking uses GPS for fraud detection through geo-tagging transactions and power grids need GPS timing to coordinate electricity flow.

GPS Technology & Components

Science And Technology GPS technology GPS

GPS Technology: System Components & Working Principle

Must know

GPS (Global Positioning System) uses 24+ satellites for global positioning and timing

Requires 4 satellites minimum for accurate 3D positioning

Provides location, navigation, tracking, mapping, and timing services

Good to know

Operated by US Department of Defense, free for civilian use

What is GPS

GPS (Global Positioning System) is a satellite-based navigation system that provides location and time information anywhere on Earth. It works by measuring distances from multiple satellites to calculate exact position coordinates.

GPS System Components

# GPS System
## Space Segment
- 24+ Satellites
- 6 Orbital Planes
- 20,200 km Altitude
- 12-hour Orbit
## Control Segment
- Master Control Station
- Monitor Stations
- Ground Antennas
- Data Upload
## User Segment
- GPS Receivers
- Mobile Phones
- Navigation Devices
- Military Equipment

Five Core GPS Applications

Application

Function

Examples

How GPS Helps

Location

Determining position

Find my phone, emergency services

Provides latitude/longitude coordinates

Navigation

Getting directions

Google Maps, car GPS

Calculates routes and turn-by-turn guidance

Tracking

Monitoring movement

Fleet management, fitness apps

Records movement paths over time

Mapping

Creating accurate maps

Survey work, GIS mapping

Provides precise coordinates for mapping

Timing

Precise time sync

Power grids, banking networks

Atomic clocks provide nanosecond accuracy

GPS in Mobile Phone Operations

Science And Technology Mobile phone operations

GPS Applications in Mobile Phone Operations

Must know

Navigation apps like Google Maps use GPS for real-time directions

Ride-hailing services (Uber, Ola) depend on GPS for driver-passenger matching

Emergency services can locate callers using GPS coordinates

Key Mobile GPS Applications

Navigation & Maps: Google Maps, Apple Maps provide turn-by-turn directions using real-time GPS positioning

Ride-hailing Services: Uber, Ola, Rapido use GPS to match drivers with passengers and track rides

Food Delivery: Swiggy, Zomato track delivery executives and provide live order tracking to customers

Emergency Services: Police, ambulance can locate callers automatically using GPS coordinates from mobile towers

Location-based Advertising: Apps show nearby restaurants, shops, offers based on current GPS location

Connection to Question

This was Statement 1 in the question and is clearly correct. Mobile phones are perhaps the most visible use of GPS technology today, making this option easy to identify as true.

GPS in Banking Operations

Science And Technology Banking operations

GPS Applications in Banking & Financial Services

Must know

Fraud detection systems use GPS to flag unusual transaction locations

ATM networks use GPS for location tracking and route optimization

Good to know

Geo-tagging of transactions adds security layer to banking operations

Banking GPS Applications

Fraud Detection: Banks compare transaction location with customer's usual patterns - flag transactions from distant locations within short time

ATM Location Services: Mobile banking apps use GPS to show nearest ATMs and branches to customers

Geo-tagging Transactions: Each transaction gets tagged with GPS coordinates for security audit trails

Cash-in-transit Security: GPS tracking of vehicles carrying cash between banks and ATMs for security

Location-based Services: Banks offer location-specific services like currency exchange rates at airports

Why This Surprises Students

Statement 2 often confuses students because they don't immediately connect GPS with banking. However, modern banking heavily relies on location data for security and customer service.

Exam traps

Trap: Students think GPS is only for navigation and miss banking applications

Trap: Confusing GPS with internet connectivity - banks use GPS for location, not just online services

GPS in Power Grid Control

Science And Technology Controlling the power grids power grids

GPS Role in Power Grid Management & Control

Must know

Time synchronization is critical for power grid stability across vast networks

GPS provides nanosecond-level precision needed for grid coordination

Good to know

Grid operators use GPS timing to match power generation with demand

Why Power Grids Need GPS

Power grids require extremely precise timing to coordinate electricity flow across thousands of kilometers. Even microsecond delays can cause power imbalances, blackouts, or equipment damage. GPS satellites carry atomic clocks that provide this critical timing precision.

Specific GPS Applications in Power

Time Synchronization: All grid components must operate on identical time to prevent power surges and blackouts

Load Balancing: GPS timing helps coordinate power generation from multiple sources (thermal, hydro, solar) in real-time

Fault Detection: Precise timestamps help identify exactly where and when electrical faults occur in the grid

Smart Grid Management: GPS enables coordination between traditional power plants and renewable energy sources

Emergency Response: During power failures, GPS helps restoration teams coordinate repairs across multiple locations

Connection to Question

Statement 3 is the biggest surprise for most students. They associate GPS with location but miss its timing function - which is actually more critical for power grids than positioning.

Exam traps

Biggest Trap: Students think GPS is only for location/navigation and eliminate power grid option

Trap: Missing that power grids need timing precision, not just location tracking

Science And Technology

Global Navigation Satellite Systems (GNSS) Worldwide

Must know

GPS (USA) is most widely used but not the only satellite navigation system

NAVIC is India's regional navigation system covering Indian subcontinent

Good to know

GLONASS (Russia), Galileo (EU), BeiDou (China) are other major systems

Major GNSS Systems Comparison

System

Country/Region

Status

Coverage

Key Feature

GPS

USA

Operational since 1995

Global

Most widely used, 24+ satellites

GLONASS

Russia

Operational since 1995

Global

24 satellites, works in polar regions

Galileo

European Union

Operational since 2016

Global

High precision, civilian controlled

BeiDou

China

Global since 2020

Global

35 satellites, messaging capability

NAVIC

India

Operational since 2018

Regional (Indian Ocean)

7 satellites, indigenous system

India's NAVIC System

Full Name: Navigation with Indian Constellation (NAVIC), also called IRNSS (Indian Regional Navigation Satellite System)

Coverage: Extends 1,500 km beyond Indian borders, covering entire Indian subcontinent

Satellites: 7 satellites (3 geostationary, 4 geosynchronous orbits)

Accuracy: Better than 20 meters in primary service area

Strategic Importance: Reduces dependence on foreign GPS systems for critical applications

NAVIC provides independent navigation capability across the Indian subcontinent and surrounding regions
NAVIC provides independent navigation capability across the Indian subcontinent and surrounding regions

Source: ISRO — Satellite Navigation Services · www.isro.gov.in