switch gear and devices

switch gear and devices- complete engineering book

Shael · com.switchgearandprotectivedevices

Not rated yet 10K+ downloads v1.0 8.3 MB Android 3.2+ PEGI 3 · Everyone

Download APK 8.3 MB All versions

At a glance

Latest version: v1.0 (1)
Updated: Apr 16, 2020 (6 years ago)
APK size: 8.3 MB
Requires: Android 3.2+ (API 13)
CPU support: Any (no native code)
Category: Education (app)
Listed since: Aug 6, 2018 (at least)
Permissions: 7 (4 sensitive)
Developer contact: [email protected]

About this APK

switch gear and devices is an app by Shael in the Education category, listed since at least August 2018. It has no native code, so it runs on any Android processor.

It asks for 7 permissions, 4 of them sensitive, including precise location, approximate location and read shared storage.

Description

From the listing uploaded by “apps”.

Switch Gear and Devices is an education application which cover all topic ,with important theory, which is available totally free on play store. Protective Devices: Philosophy of protection, Nature, Causes and consequences of faults, Zone of protection, Requirements of a protective scheme, Basic terminology components of protection scheme. Relay classification, Principle of different types of electromagnetic relay. Feeder: Protection: Over current and earth fault protection, Distance protection, Pilot wire protection, Carrier current protection. Generator Protection: Biased differential protection, restricted earth fault protection, Field suppression, Negative sequence protection, Earth fault detection in rotor circuit Power transformer Protection: Biased differential protections, restricted earth fault protection, Buchholz relay Protection of combined transformer and alternator. Bus Zone Protection: frame leakage and circulating current scheme-use of Translay relay. Circuit Breakers: Formation of arc during circuit breaking. Characteristics of electric arc. Theories of arc Interruption. Recovery and restriking voltage, interruption of capacitive and inductive currents. Current chopping. Principle of A.C. and D.C. circuit breaking requirements of good circuit breaker circuit breaker rating. D.C. Circuit breaker. H.R.C. Fuse: Construction and characteristics Static Relays : Development and classification of static relays, Different types of phase and amplitude capacitors, Arrangement of Bus bar, Circuit breaker and isolator. Current limiting reactors in power system and their arrangement calculation of fault MVA for symmetrical short circuits. Circuit breaker capacity

Security & authenticity

Security rating: Trusted

Signing certificate

Certificate issued to “sa” Not the developer's name (“Shael”). Names in certificates can't be verified, so this alone proves nothing.

Store checks and file details

Developer signature verified Apr 16, 2020
Antivirus scan passed Nov 11, 2020
Signed byCN=sa
Signing certificate (SHA-1)B6:F6:56:30:CE:98:38:F7:81:32:3E:71:19:B4:0D:95:B2:67:2E:F3
File MD5a4b9de8215f6209552bf3e40be6599c4
Uploaded by “apps” Platinum tier · 3,423,810 followers · uploading since 2010

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (7)

switch gear and devices requests 7 permissions, 4 of them sensitive.

Approximate location Sensitive android.permission.ACCESS_COARSE_LOCATION
Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
Precise location Sensitive android.permission.ACCESS_FINE_LOCATION
Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
Full network access android.permission.INTERNET
View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Location android.hardware.location
GPS android.hardware.location.gps
Network location android.hardware.location.network
Touchscreen android.hardware.touchscreen
Wi-Fi android.hardware.wifi